The Summer I Turned Pretty is a multigenerational drama that hinges on a love triangle between one girl and two brothers, the ever-evolving relationship between mothers and their children, and the enduring power of strong female friendship. It's a coming-of-age story about first love, first heartbreak, and the magic of that one perfect summer based on the Jenny Han novels.

Belly used to count down the ways until she could return to Cousin Beach, but with Conrad and Jeremiah fighting over her heart and Susannah's health issues, she's not sure summer will ever be the same.