Arielle Tesfaye is now on her way to Amphitrite State University. 2 months after the events of Wet, Arielle and The TigerSharks are back at it again to wreak havoc, but this time, in an all new school, filled with all new teams, all determined in stealing their secured title of being the best swimming team in the state. As the competition rises, so does the drama. While new problems form, conflicts from the past reemerge to haunt the future. Another storm is coming, and this time, Arielle won't be ready.

Ivy Lynch has been babysitting practically her whole life. She is known around town, getting job offer after job offer. It pays. This summer, she receives an offer to be a full-time nanny for the Kennedy family while the mom goes on a mission trip to Haiti. Unable to turn down the job due to the promised payment, Ivy agrees to spend her summer living with the Kennedy family. That includes oldest son, Elliott, the rebellious boy from Ivy's high school whose mom doesn't trust him enough to take care of his siblings for three months. A lot can change in three months.