Thomas is an arrogant and merciless businessman who live in a universe of luxury.Mathilde is a very sensible and insecure woman who recuperates a lot things in the dustbins.This day Thomas was driving his mountain bike through a park, Mathilde was with her friends Nathalie and Patricia and she was trying to drive a car.Suddenly Thomas shocked the car driven by Mathilde,flies in the air and falls down: he remains unconscious some minutes and when Patricia asks him his name he answers that he has lost his memory.They carry him to an hospital where the doctor makes an medical examination.Patricia doesn't want to have problems and goes away.The doctor says that Thomas needs to rest and Mathilde accepts to invite him for a night in her apartment.When Thomas was jumping above the car, he lost his cell phone and his colleague is calling him.