Abandonment. That's what 17 year old Hannah feels when she comes home to an empty house. Her mother is gone. She's on her own. After tracking down a relative - her Aunt, Erin - on social media, she reconnects with a family she's been apart from for twelve years. Her cousin, Seb, is the same age as her and suddenly they are thrown together to spend the summer figuring everything out. Cannon Whitaker, Seb's best friend, is just waiting for the summer to end so he can move away to college and leave his life in Clearwater behind. That is, until Hannah makes him feel things that he never thought he'd feel.