Here is the rephrased movie overview: In this heartwarming film, an 11-year-old Slovakian boy named Jonas convinces his mother to let him spend the summer with his cool grandfather, Bernard, a widower. Initially, Bernard is reluctant to let Jonas have his way, but the two eventually bond and share a series of exciting adventures. When Jonas discovers that his grandfather has a deep emotional connection to a rowing boat, he learns a valuable lesson about understanding and empathy.
Summer Rebels
A grandfather and grandson embark on an unexpected adventure down the river, navigating a mix of excitement and disagreement with the boy's mother.