Het Huis Anubis: De Graal van de Eeuwige Vriendschap (2008)

The residents are busy with the preparations for the school musical. Among the collected chests they find an ancient Inca treasure: The Grail of Eternal Friendship. Noa accidentally liberates the spirit that resides in this grail and gets stuck inside a painting. One by one they meet the same fate. Only by solving the riddles and fulfilling dangerous assignments can the mysterious curse be undone. But is their friendship strong enough?