Justin returns from living abroad in the hope of reconnecting with the biological daughter that he gave up for adoption. His plans go awry when he finds out his father left the family cottage to his stepsister.
Justin is determined to make this summer his best yet. Unfortunately, his plan goes up in flames when his fireworks blow up the boathouse. Everyone blames Justin, but he knows he’s innocent. He just has to prove it. Maisy's mother Mimsy shows up to spend her “last” summer with her family. And Billie meets both a gorgeous tree planter and a climate activist who threaten to blow up her summer too.
