Mika is a young art student in London who discovers a shocking secret: she can jump into paintings. While visiting a museum, she sees her brother—who everyone thought was dead—trapped inside a famous artwork. A mysterious boy named Nicolas explains that Mika belongs to an ancient family with the power to travel through art. Mika joins a secret group of “painting jumpers” to save her brother, but she soon finds out that these people are hiding dangerous plans that could change the whole world.