Community workers, Alex and Stéphanie take five teen dropouts on an educational journey across the Mediterranean. But their skipper happens to be an ex cop with a powerful hatred for youths from the hood.

Greg founded a company called Alibi.com that creates any type of alibi. With his associate, Augustin, and Medhi his new employee, they devise unstoppable stratagems and stagings to cover their clients. But meeting Flo, a pretty blonde who hates men who lie, will complicate Greg's life, which begins by hiding the true nature of his activity. During the presentation to parents, Greg understands that Gérard, the father of Flo, is also one of their clients.

A terminally ill French secret service agent is hired by Hydra, a mysterious black ops organization set up by the government, to fight crime by any means necessary and receive experimental treatment in return. Also, his daughter hates him.