Hania, an energetic 11-year-old, moves to a new village with her father and her dog. Her late mother had told her stories about mysterious goblins, and together they had hoped to catch at least a glimpse of those fluffy, hooded little creatures that live in the forest. At her new school, Hania is cruelly mocked when she talks about goblins and is demanded to provide proof of their existence—under threat of being bullied or having mocking videos posted online. Fortunately, another bullied student at the school, the super-smart budding inventor Michał, can build just about any kind of technical device. Together, they decide to prove that goblins are real and set a trap for them in the nearby large forest—which, surprisingly, works! However, the goblin caught in the trap is cunning and demands that the children help him with various tasks in exchange for a photograph. Will Hania and Michał succeed in completing the tasks and prove to their bullies that goblins really do exist?