In the zombie castle, everything is upside down from morning to evening - because the children of the Zombie Lord and Milli-Ghost, the twins Lacuna and Hiatus, live in it, and they cannot sit still. But one day Lacuna got bored with everyday pranks, and she decided to perform a feat, namely, to go to the underworld in search of the Good Wizard Humphrey, who disappeared without a trace from his castle several years ago. Wizard Gray, who is tormented by the evil Kon-Puter, agrees to help Lacuna if she helps him with Kon-Puter. And so the journey begins - Lacuna descends underground in a laundry basket, where incredible adventures await her...