Annie Fleet, master scuba diver and history buff, knows she can't fight her nerd status as a freshman at her Los Angeles private school. And she doesn't care-except for the fact that her crush, Josh, thinks she's more adorable than desirable. Annie is determined to set him straight on their school trip to Mexico. But her teacher has other plans: he needs Annie to help him find Cortez's lost-long treasure. Suddenly, Annie finds herself scuba diving...