In one of my stories called "Chocomonkey" Ladybug gets thrown into the water by ChocoMonkey(my villain) and Cat Noir dives in to save her.
"Cat Noir's POV"

"LADYBUG!!NO!"I yelled as I saw that crazy chocolate monkey kid throw her in the water,I got to the edge of the bridge and I was hoping she pop up saying she's ok and get the akuma but nothing."Cat Noir!" My ears perked up from hearing Bolterina's voice as she skated towards me with Go-Go behind her,"Oh my jing dang bolts! What do we do?!" I didn't need to be told twice."Pull my staff when comes up" I instructed them before putting my staff between my teeth and dived in,ignoring Bolterina and Go-Go's calls.
"Third Person's POV"

"CAT NOIR!" Bolterina and Go-Go yelled as the cat suited hero jumped in the water,"No wait!" The mechanic girl yell as she stopped the feline from jumping in and they both looked down in fear. Meanwhile Ladybug was thrown in the water with so much force she started to get dizzy,she saw her partner dive in the water before she slid in unconscious. Cat Noir swims as much as his body could until reaching his Lady and wrapping his arm around her waist,he takes the staff out of his mouth and presses the button. "What we do?!what we do?!" Bolterina panic as she and the cat paced around until noticing some bubbles in the water,"Huh?Cat Noir!" They both yelled as the black cat suit hero came up on his extended staff with Ladybug in his arm."Quick pull my staff down!" He yelled as he pushed the staff down a bit and held Ladybug bridal style while Bolterina and Go-Go pulled the staff down,Cat noir placed his partner down gently.
"Ladybug's POV"

"Ladybug! Come on Ladybug wake up!" I heard someone calling my name...Cat Noir."Hey I think she blinked!" Bolty's voice echoed and my vision cleared a bit for me too see worried faces,"Ladybug!" They yelled in excitement before I stood up to cough up some water."What happen?" I asked while my partner pulled me up wait...he was wet too,"Cat Noir dove in the water to save you" Bolty explained to me and Go-Go nodded in agreement."Really I thought cats hate water" I teased Cat as he rubbed his head sheepishly,"Well yes but doesn't mean I can't save my Lady when she's drowning" he told me and I just felt myself smile.
"Cat Noir's POV"

I froze when LB kissed my cheek,"thanks for save Cat. I never knew you were that brave enough to save me" she told me embarrassed but we realized we still had a villain in our hands."Um I think we can cheer later,right now let's handle crazy monkey boy" Bolterina suggested as they ran,"Next time I'll be giving you a cheek kiss my Lady" I said dreamily as I ran to catch up.