Female students, including Hikari Tomonaga, from a high school cheerdance club follow strict instructions from their teacher Kaoruko Saotome. They compete at the USA Cheerdance Championship.

In this fresh coming-of-age story, an 18th birthday mushroom trip brings free-spirited Elliott face-to-face with her wisecracking 39-year-old self. But when Elliott’s “old ass” starts handing out warnings about what her younger self should and shouldn’t do, Elliott realizes she has to rethink everything about family, love, and what’s becoming a transformative summer.