Damian's family shows up at their new home, and no one is happy about it. They are living under witness protection now that Dad, a powerful gangster, has turned Queen's evidence. Now they are expected to live in a cramped flat in a run-down council estate—they are fish out of water, having got used to the privileges and wealth that had come with Dad's job. And Dad's current moods and bad temper aren't helping matters one bit. It's summertime, and Damian—'Finn'—is soon introduced to the neighbourhood kids, and is pressured early on to bully local boy Tel. 'Finn' refuses, and comes to befriend Tel, who by night is costumed crimefighter Star Kid! Star Kid is on a mission to help free the estate from local gangster extortionist Ronnie. (Despite this problem, their neighbours on the estate are mostly good, with a strong sense of community.) Tel recruits Finn to his superhero team, and Star Kid and Moon Boy manage to get rid of Ronnie in a bugging-sting-gone-wrong exercise. But then Finn is horrified to discover that someone else has stepped into the protection racket and terrorising the estate: it's Dad!
