De Vier van Westwijk - De verdwijning van Bo Monti

The tickets are ruined because Chris fails to mind them or playful dog Koesja. So the kids each try to get in any way the can, the girls even try try dirty tricks. Jack meanwhile is delighted that his favorite rock band also arrives on the island and auditions guitarists, so he he tries out. When Bo Monti finally presents the singer on stage, it's only to find out right there that the celebrity has gone missing.