Lara Jean's last year of high school couldn't be going better: she's head over heels in love with her boyfriend Peter, her father is finally marrying their neighbor Ms. Rothschild, and Lara Jean's sister Margot is coming home for the summer. But as Lara Jean eagerly helps with the wedding preparations, changes are on the horizon. She has to make big decisions: which college should she attend, and what does that mean for her relationship with Peter? Soon, Lara Jean will have to leave her home and her family - and maybe even her first love? The long-awaited conclusion of the romantic bestselling trilogy about growing up.