Nina, a teenager with a heart condition and daughter of a hypermarket owner, sees her outlook on the world turned upside down when she learns that she has always lived thanks to a pig valve transplanted to her heart. Hugo, son of industrial pig breeders, is in love with Nina. So when she decides to save the life of Fleur, a sow destined for slaughter, Hugo does not hesitate and embarks with her on a crazy road trip, with the authorities on their heels, to save the life of this innocent pig.