In the final chapter of this romantic saga, Elle Evans finds herself on the brink of a major transition: graduating from high school and facing decisions that will change her future. As summer slips rapidly through her fingers, Elle must deal with the pressure of choosing between her dreams and her relationship with Noah, the boy of her dreams, who is also grappling with his own challenges as he embarks on his college journey.
A trip to the iconic kissing booth, where it all began, gives Elle the chance to reflect on her life and relationships. This year, however, there’s an additional twist: her best friend, Lee, is not willing to let them leave without one last big effort to help everyone enjoy their teenage years. Together, they plan a series of crazy and memorable activities at the beach.
However, Elle and Noah's relationship is put to the test, as Elle must not only confront her feelings for her teenage love but also the pressure of family and friends' expectations. The story navigates through friendship, love, and the fear of saying goodbye to a chapter that has defined her life. As Elle tries to find her way, she learns that letting go doesn’t mean forgetting, and that sometimes you have to take risks to get what you truly want. With a mix of laughter, tears, and emotions, this conclusion culminates in an emotional journey toward the future.