80's pop icon Gilles Gabriel is about to make a comeback in the French music scene, until he accidentally hits Ranu, a slightly nutty accountant, when out driving one day. Both are horrified to realise that Gilles died in the crash, and that his spirit now lives in Ranu's head! The kooky accountant's life soon becomes chaos!
Four pals are stuck in a rut in adulthood: Adam has just been dumped, Lou is a hopeless party animal, Craig is a henpecked husband, and Jacob does nothing but play video games in his basement. But they get a chance to brighten their future by changing their past after a night of heavy drinking in a ski-resort hot tub results in their waking up in 1986.