Luxury swimming pools and overheated teenagers trespassing have always gone hand in hand. This time, however, “beware of the dog” hardly suffices: cornered by the water, the youths come face to face with three fearsome beasts. Next door, tradition holds steady — a group of friends from another generation welcomes the arrival of summer. Yet despite the screams and desperate cries for help, no one seems to hear. On the eve of St. John’s Day, everything is bound to turn bizarre.