When Alma discovers that her father’s company plans to demolish the playground, she gets determined to save green areas. Alma has no choice but to join forces with her worst enemies – Luna’s skate gang.

The events in the movie begin just before classes start, when one of the students sets off a stink bomb in the school restroom. Because of the incident, the school has to be evacuated and classes are dismissed early. The principal and the school counselor must then identify the real culprit among five suspects. Was it just a childish prank, or a deliberate act?