Jim Button and his loyal friend Luke the Engine Driver set out on a magical and thrilling journey to save a hidden island from destruction. Along the way, they encounter various challenges, unexpected transformations, and the power of friendship. This action-packed family fantasy film is based on the novel of the same name.

Jim Button, a young boy, embarks on an epic quest to find his parents who abandoned him. Along the way, he encounters a talking steam locomotive, pirates, a golden dragon, and a mesmerizing mermaid. With the help of his friends, Jim must navigate through deserts, islands, and enchanting landscapes to uncover the truth about his past.