Best friends Bětka and Alma are spending a dull summer at a lakeside with Bětka’ s older sister Marie. The teenage girls want to experience something big but their efforts fail until they discover a mysterious pool on an island.

Carefree Jindřiška (23) discovers that her father owes a lot of money when debt collectors arrive to confiscate their house. In a single day, Jindřiška's world falls apart, forcing her to choose between helping her father or saving herself before it's too late.