A young woman stalks her high school bully via social media.

Senior year of high school takes center stage as Lara Jean returns from a family trip to Korea and considers her college plans — with and without Peter.

After landing from a turbulent but routine flight, the crew and passengers of Montego Air Flight 828 discover five years have passed in what seemed like a few hours. As their new realities become clear, a deeper mystery unfolds and some of the returned passengers soon realize they may be meant for something greater than they ever thought possible.