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...