Young Michael hates his dilapidated new home, he's worried about his sick baby sister, and he's bullied at school. But life changes when he stumbles upon 'Skellig' hiding out in a backyard shed, and quickly realizes that there's something very special about him. As magical things start to happen, an entirely new world opens up to Michael, who turns to a reluctant Skellig for help when his baby sister takes a turn for the worse.