The is a story of a girl named Pieta. She lives in a day that has been repeated over a thousand times already. For her, however, this is not a curse, but the happiest day that she is ready to see at least a million times more: it is her birthday. Yet, one day, her friend also begins to understand that she lives in a day that is constantly repeating itself. Now the two friends will have to uncover the secret of the world, where today will never become tomorrow.