Four siblings, the oldest Kryštof, twins Ema and Kristýna, and little Samuel, live happily in a happy family. But one morning they wake up in a strange situation. Their parents cannot be woken and the kids suddenly have to cope on their own. They soon realize that parents all over the world have fallen asleep. What's worse, little Samuel is kidnapped! For the siblings, a daily struggle begins, in which the strong and clever win against the cunning and ruthless.