In 1957, a shy Bryce Loski tries to avoid Julianna "Juli" Baker, who's convinced she's in love with him. By 1961, Bryce attempts to distance himself by dating Sherry Stalls, but things backfire when his best friend Garrett reveals the truth. Juli becomes heartbroken, only to see Bryce and Sherry break up. As they reevaluate their feelings, Bryce's grandfather Chet Duncan moves in, bringing a different perspective on Juli. The two share a deep connection with a large sycamore tree, which holds significant meaning for Juli. However, the tree is cut down, leaving Juli devastated and depressed.

Flipped
Two middle school students with contrasting interests and traits form an unexpected bond, bridging their initial differences.