The story begins with sisters Nupur and Gunjan Bhushan leaving rural Morena for Mumbai to join Excel College. They are cousins to "Queen Bee" Diya and Uday. Diya, horrified by news of their arrival to Excel aside her, does everything in her power to make their lives miserable, to no avail. These pranks introduce Samrat, lead athlete and college star, and his close friend Benji as friends of Diya.

During this period, we learn about the personality of each lead character and some history. Nupur begins college by repeatedly receiving Mayank as a mandatory project and traveling partner, while Gunjan gets pushed into a talent parade by Samrat

and returns the support by tutoring him. Through tiffs, a dance number, and a series of misadventures; Mayank falls in love with Nupur and becomes friends with Samrat. Samrat having helped Gunjan blossom; mutually call each other a dear friend after restoring honesty. Time passes and Gunjan misinterprets subtleties from Samrat and begins to knowingly harbor unstated love for Samrat just as he clarifies Gunjan to be his closest friend. Mayank, disregarding his love, feuds with Nupur.

As these emotional discoveries arise, a new character, Sheena, talented actress and bombshell, enters Excel to be part of the traditional college play. Ranvijay; a daredevil bad boy; who breaks all limits to see things his way, enters as well. Sheena finds Samrat attractive and Samrat initiates a serious relationship with her while Ranvijay attempts to take advantage of Diya, to Samrat's hatred. A rivalry brawl ensues. Gunjan, on the other hand, consistently reiterates to Samrat, wanting the best for him, that Sheena, his girlfriend, will not allow their unique friendship to continue and to stay distant from Ranvijay. Samrat reluctantly agrees. The play progresses where Mayank dramatically confesses his love for Nupur on stage, starting their private relationship.

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At a subsequent party, Sheena, knowing Gunjan's feelings, shows her true colors by trying to accuse Gunjan of shoving her into the pool because of her unrequited love for Samrat, which ends disastrously, as Samrat is assured by Gunjan's eyes, a friend, she was innocent. Samrat and Sheena break up; however, Ranvijay, for revenge of the brawl, frames Samrat for drunken driving when leaving from that very venue. The gang proves otherwise, in court, and both Sheena and Ranvijay leave the plot. During the brief time spent in jail, Samrat realizes his intense love for Gunjan because of others' remarks since that day. Later, Gunjan, sensing a change in Samrat, believes Samrat has heard her extensive confession, and through a series of unfortunate circumstances, neither communicates their feelings leading to an extension of their friendship. At this point, both sisters are hurting from relationship difficulties, thus immediately take leave from Excel for a family wedding in Morena.

After the sisters leave, the gang feels lonely; knowing Diya and Uday would leave soon as well, they decide to pursue Gunjan for Samrat and his newfound love. Mayank, wanting to apologize to Nupur for hiding their relationship and scolding her, separately pursues Nupur. Mayank enters the Bhushan household posing as Nupur's childhood friend who has come to consider Nupur's hand while Samrat and Benji come as Diya and Uday's friends. Between a series of events, Samrat finally expresses his love to Gunjan on the night of Dusshera. Mayank also promises to commit to Nupur just as he learns his mother lost her job. Hearing this, Mayank promptly leaves without telling anyone and, in the wake, unknowingly reveals his identity. Nupur assumes their relationship is over. From this, Shashi and Ratna develop a pivotally negative opinion about Mayank. Ratna, angered from Mayank, faults Samrat as well, for his disruption during a religious ritual and serving eggs, and asks him to leave immediately. Shashi however, hearing Samrat's apology as he left, respects his response and thus hands Samrat the responsibility of his daughters. The gang soon follows Samrat back to Mumbai.

Back at Excel, the gang sorts out the differences between Nupur and Mayank with the help of Samrat's plan. After assuring Nupur of his love and commitment, Mayank goes with his mother to Bangalore, where she gets a new job. While Mayank is gone, Ratna and the Bhushan family decide to have Nupur married and send the match, who Mayank impersonated in Morena, to college. This new character is Adhiraj, Nupur's childhood friend and expected suitor. In search of Nupur at Excel, Adhiraj mistakes another Nupur to be the Nupur he is looking for. The gang takes advantage of this new character entry and makes the new Nupur into Nupur Bhushan who Adhiraj seeks. The two begin to fall in love. This all backfires when it is revealed, to everyone but Samrat, the new Nupur is Samrat's long lost younger sister Suhaani Shergill. From a young age Samrat has lived alone with a wrath filled grudge for all of his family members because his parents' divorce. In the custody battle, he was separated from his sister and has since believed his mom chose his sister over him. Suhaani lives in London with their mother before coming to Excel to reunite with Samrat. Mayank returns to surprise his friends when he learns of what the gang has been up to and convinces them to tell Adhiraj the truth about Nupur and Samrat about Suhaani after the big basketball game. Samrat and Adhiraj clash for control of the team on game day and mid-game put their differences aside for the team. At the after party Samrat gets hurt and consequently learns the truth about Suhaani, which leads to Adhiraj learning the truth. Adhiraj discloses this deception to Shashi who then forces Nupur into marrying Adhiraj. Adhiraj consents to the marriage in anger of Suhaani's betrayal. Different people reveal to Adhiraj the gang played this prank on him because Nupur loves Mayank and he must believe Suhaani is truly in love with him. Adhiraj decides to call off the wedding, but before he can tell his father he is knocked out by Uday so Mayank reluctantly replaces Adhiraj before the wedding ceremony. Though Mayank is caught by Shashi and the wedding was to go on as planned, Adhiraj's father finds out about Nupur and Mayank, so he calls off the wedding. After the humiliation, Shashi agrees to Mayank and Nupur's marriage. They are wedded, but Shashi disowns her afterward as he has been betrayed and humiliated. With nowhere to go, the couple turns to the gang for help settling their new life.

During this phase, the Bhushan sisters drift apart because of Nupur's agitation from Gunjan's support of her father's actions and Gunjan's defense for Samrat in spite of the indecency she discovers. The sisters restore their relationship when Nupur protects Gunjan from being eve-teased by thugs. After this incident, Gunjan incorrectly believes Samrat will propose to her at Valentine's Nite and Nupur feels happy to be wrong about Samrat. On the party night, when Gunjan sees Adhiraj proposes to Suhaani instead, she walks away. Gunjan, upset, then has a brief dialogue with Samrat about the importance of marriage before leaving the party alone. Once outside in the late night, the same, armed thugs corner Gunjan when Adhiraj takes notice. She, unfortunately, is critically wounded in the chest. Gunjan is rushed to care where, while unconscious, her body gives up the will to live from the emotional stress of that evening. The next day, she recovers to find herself paralyzed waist down. At the hospital, Shashi forgives Nupur and once home tells Gunjan, he approves of Samrat. Gunjan, unable to allow herself be a burden after that night, assures her father she not in love with him. Next, through a series of events, Nupur battles the culprits of Gunjan's condition; a well-known, corrupt politician and his brother; getting them arrested with the use of media, while becoming Excel's role model. After this, the gang opts for a vacation with the goal of getting Gunjan to walk again while setting a romantic mode for those accompanying. At the resort, the gang implies Samrat's impending death for Gunjan when Samrat truly falls in danger's path. Distraught, Gunjan bolts up and runs to save his life. Notably, Benji also begins a budding romance with Diya when she hugs him for protection from ghost Uday.

The gang returns home with their relationships strengthened when a baby girl, as a prank, enters the life of Samrat, Mayank, Benji, Adhiraj, and Uday with a letter falsely claiming that one of them is the father. Because of the baby, the girls band together against the boys. After a series of mishaps and strains, it is finally revealed the entire gang, boys and girls, were on a reality show. Suhaani breaks the news that she has to return to London. Hearing this, Adhiraj is heartbroken but the guys give him the idea to "break up" first and surprise her later by leaving with her to London to get married. The gang is sad to see their friends go but decide that life is about change and this change was bound to happen.

A famous director, Neel Oberoi, comes to Excel for an open casting call; he is an old friend of the Bhushan sisters and has a soft spot for Gunjan. After purposefully casting Gunjan, Neel's growing closeness with Gunjan makes Samrat overprotective and his headstrong actions create a production problem straining Gunjan's emotions. Through this, Gunjan learns Neel is in love with her and reconciles with Samrat. Meanwhile, Mayank and Nupur enroll for the same job scholarship and Nupur wins it. Mayank and Nupur split after a row, and Nupur goes to Delhi. It is shown here Diya also likes Benji and they both hide their feelings from each other, while Uday suspects their love. Later, Mayank and Nupur sort out their differences and retake their wedding vows and Samrat proposes to Gunjan that she accepts. Both couples' relationships reach new levels of closeness. Samrat and Gunjan get engaged. This time, Benji reveals his love to Diya and she happily reveals she feels the same. Mayank and Nupur decide to go to the United States leaving nothing behind. As Nupur, Gunjan, Mayank and Samrat speed to the airport Samrat careens the car off the road and the principal characters are involved in a life-changing accident.