Melusine is a sorcerer's apprentice, funny and dynamic, who does everything possible to become a powerful witch. Unfortunately, she's not always successful, and very often her tricks turn against her and her friends... But tremble, poor mortals, for it's the return of Halloween, the day of witches and the walking dead! This festival of demons must be celebrated with dignity, with great smashing of pumpkins and rotten tricks. The opportunity rises for Melusine and her friends to show what they can do... And then to start a new storm of gags and catastrophes!