There's going to be two senario

Cross over

You and your friends went on a Disney cruise to the caribbean for vacation. On your way back to the boat you gotten a suviner from a strange lady, you bought a compuse but it doesn't work wile your friend bought a strange necklace.  Once you two went back onto the boat and sail off something strange happens. There's a dark clouds forming and the cruise ship is rocking because of the waves. You ran out and so did your friend,  onto the deck because you saw something outside in the ocean. When you get to the deck you see a pirate ship but is trasparent and the ship slowly creep over to the cruise ship then suddenly you both were seept off the ship because of the massive wave and you black out as you both slowly  sinking to the deths of the water.

Second

You were at the beach with England talking about the pirates then suddenly you asked him if mermaids and ghost excited but he wouldn't tell you as if he have a secret. You want to know and determine so when England fallen asleep on the beach you grab his spell book and open it then suddenly you were suck in and travel back in time during the pirate era .