On foot or by bike, accompany the two friends, Jack la Panouille and Max Decoop, in their adventures in Saint-Maurice-en-Rivière! Max and Jack have heard about a treasure of great wealth while letting their ears wander. It seems that the Grail is to be found in the village. This could be the opportunity for the two ears of corn to become rich and take the field for good! But our two adventurers will have their work cut out for them... Help them on their way!