Mourning Lucy's death, Greta meets the enigmatic Will Tucker, a stranger bearing a game left by her sister — but the only way to play is to trust him.

Guided by Lucy to look for life's beauty, Greta and Will embark on her first-ever trip abroad, and a storm forces them to share a hotel room overnight.

Will halts progress on Lucy's game to sort through his conflicted feelings. Greta reconnects with her father and tries to help her mother move forward.

No longer able to hide his past, Will comes clean about his troubled youth — and the tragic reason Lucy chose him to guide Greta through the game.

Greta takes a break from the Map of Longing after Will's confession to work on herself and begin planning for a future that belongs only to her.

Lucy's final letters leave Greta in uncharted territory with Will, but give her the courage to embrace life — starting with a trip close to her heart.