Athens, Greece. A heatwave. Stephanos is working out and listening to rap, while his mother is planning for a day out. After a fight between them, he is left alone to take care of his two younger siblings and Lucy, the family dog, who is sick. It is a lazy summer day spent among pizza boxes, adolescent flirts, and a phone left unanswered. The three siblings are in store for major changes when Stephanos finally picks up the phone. This would be the last care-free day of their lives.