Society as we know it is dead, the world has changed, and everyone has the choice between adapting immediately or disappearing. A few survivors have taken refuge in a shelter away from outside dangers. Their survival is ensured by a machine that produces electricity, an extremely rare resource in these desolate times. One morning, the group discovers with horror that their machine has been destroyed. The hunting party is on: the six companions must venture outside their shelter and immediately find a cable to operate the machine. This expedition, on which their survival depends, will lead them straight to a mysterious group of individuals who intend to prevent them from returning home.

Uma, a young woman almost reaching adulthood but drowning in melancholy, decides, during her birthday party, to stop time so as never to grow up. At her 20th birthday party, Uma constantly dreads the moment when the cake will be placed on the table and she will have to blow out the candles. Terrified of the responsibilities and blandness of adults, she wishes she could remain a child forever. So she and her friend Sunny decide to stop everything to relive what seemed lost to them...