During the summer of 1975 two Romanian kids Scatiul and Babusca go about their daily routine in their native fishing village on the Danube Delta when a mysterious stranger asks them for a ride in their fishing boat to a nearby island located deep inside the river delta. The stranger pretends he is a conservationist and biology researcher. However, the kids notice his uneasy demeanor and his pistol stuck in his belt. The two young friends also know that the previous night the local police found a few dead bodies aboard a foreign freighter docked in the area. While the police is investigating the murders that took place aboard the foreign ship Babusca and Scatiul continue to serve as guides to the mysterious stranger on his way to the uninhabited island of Ostrovul Lupilor located deep inside the Danube Delta. The kids start to be afraid for their lives and wonder about their lack of wisdom in agreeing to give the stranger a ride in their fishing boat.