A young man with a mysterious past and a penchant for inventing things leaves the troll who raised him, meets an unhappy princess he has loved from afar, and discovers a plot against her and her father.

Seventeen-year-old Berkeley, who has never lived with her father, accepts his offer to accompany him to Europe as a graduation present and finds herself struggling with the idea of accepting him as he really is and not as the ideal father she's always wanted.