The eleven-year-old Mo is a princess... and a pirate! She was raised by pirates and discovers she’s actually a princess. Mo has two families: her birth family (the Queen and King of Hoffnungsberg) and her surrogate family (her pirate father Captain Claas and the crew of the Wild Walli). The royals have agreed to share custody of their daughter with Captain Claas, on one condition: Mo isn’t brought on any hair-raising adventures on the high seas. But when adventure calls, Mo will drag her best friend Hannes along for the ride! Captain Claas and the crew aren’t worried about what might happen if the King & Queen found out - better ask for forgiveness rather than permission!