To All the Boys I've Loved Before meets "You've Reached Sam" in this love story filled with explosive secrets that threaten to tear apart best friends or maybe something more, Natalia and Ethan. It's Senior Sun, the epic overnight at the beach that marks the start of senior year. But for Natalia and Ethan, it's their first time seeing each other since junior prom, where they almost crossed the line from best friends to something more and ended up ruining everything. After avoiding each other all summer, Natalia is determined to pretend she doesn't care, while Ethan is desperate to fix his mistake. During the senior class tradition of writing private letters to themselves about what they wish they could do if they were braver this year, Natalia pours her heart out, as does Ethan, and everyone else in their class. But when a panicked Natalia tries to retrieve her confession, the wind scatters seven of the notes across the beach. Now, Ethan and Natalia must work together to find the lost letters before any secrets are revealed, especially their own. With seven private confessions acting as time bombs waiting to be found, they have one last chance before the sun sets on their friendship.