Ellie O'Brien (List) is trying to juggle rhythmic gymnastics and troubles with her best friend. Meanwhile, classmate Jack Malloy (Bertrand) is struggling to live up to his brothers' hockey-star legacies and his dad's high expectations and tough-love approach. When a text argument about whose life is easier gets out of hand, Ellie and Jack trigger an explainable real-life swap. As each tries to navigate the other's life, hilarity ensues when Ellie (as Jack) learns about brotherly bonding and hockey lingo, while Jack (as Ellie) has to decipher girl code and experiences a spa day. With a rhythmic gymnastics championship and a spot on the varsity hockey team on the line, they must figure out how to get back in their own bodies before the swap becomes permanent. As they are forced to literally walk in each other's shoes, they gain empathy for one another and learn valuable lessons about their own lives.

Danni Hartford, party planner to the King family, wants to find her sister. Britney, the Kings' spoiled 15-year-old daughter, wants a horse. On a nearby horse farm, Rachel is treated like a servant by her foster siblings; all she wants is a real family. When all three girls make wishes at the Christmas dance, Britney and Rachel's souls switch bodies. But the girls soon find their new lives are not exactly what they pictured. When Danni discovers what has happened, she must figure out how to switch the girls back.