After twelve years, Constantino Quijano High School opens its doors to new students; a new generation is ready to start classes. What adventures will this new school year bring us?

Cata dumps her lazy boyfriend with the secret hope that he will return, begging to get back together. When time passes and she doesn't hear from him, a devastated Cata heads off to a luxury beach resort. But who should she find there, but her lazy ex, now transformed into the perfect man... and ready to marry someone else.