Bassie & Adriaan: De Verzonken Stad(1989)

Bassie & Adriaan: De Verzonken Stad is a Dutch children's adventure film following the beloved duo as they uncover a mystery while holidaying in Greece. When Bassie discovers a mysterious stone, he and Adriaan become entangled in a dangerous game. Three cunning crooks are determined to steal the stone and unlock its secrets, setting off a thrilling chase across sun-soaked landscapes. The pair must use their wits and friendship to outsmart the criminals and protect their discovery. Packed with humor, action, and the charm that made Bassie and Adriaan icons of Dutch entertainment, the film delivers family-friendly excitement with genuine stakes. The stone's hidden secret becomes the key to an adventure neither boy could have anticipated.