Laurent, a young brigade commander in a gendarmerie in a small town in Normandy is planning his wedding with Marie, his partner and mother of his daughter. He loves his job despite facing social misery on a daily basis. One day, a farmer who might try to kill himself runs away.

A gas is released making mankind immortal, but also sterile. Despite the infinite opportunities made possible, mankind quickly becomes disillusioned. To prevent widespread depression, a machine is invented to enable people to travel through memory…