A young girl finds an unlikely and uplifting friendship with an adorable monkey in this charming, light-hearted film. Katie has lost interest in her school, her friends, and gymnastics following the loss of her mother. But her outlook changes when she is asked to monkeysit Gibby, her science teacher's capuchin monkey. Taking care of the monkey challenges Katie, but Gibby's happy-go-lucky personality renews Katie's zest for life. Gibby helps her with gymnastics, renewing friendships (including finding a potential boyfriend) and overcoming her nemesis, a mean girl who is out to beat Katie at everything.