Hearing his wealthy rival Jean-Louis frequently gives Marlene rich presents, Gert spent his modest savings on a diamond ring for her. feeling uneasy as there have been thieves reported in town, Gert tells actually more scared Samson to guard the ring. Inspired by a spy novel, regular visitor Van Leemhuizen insists on a complex plan: unsuspecting Samson and barbed wire guard the actually empty jewel box, the ring is hidden in the fridge, in a mayo jar. While both are away, the airhead snack bar owner rushes in to 'borrow' a jar, her own being empty and the shop closed that day. Passing by the meanwhile unattended snack-bar, 'spy' Van Leemhuizen hid in the trash-bin to guard it. Gert discovers his ring missing, calls the mayor who brings the police and thus causes a false arrest.
—KGF Vissers