"Revenge of the Slitheen" sets up Series 1 of "The Sarah Jane Adventures" (2007), depicting Luke's first day at school and his difficulties and early bonding anxieties with Sarah Jane. Luke struggles to adapt to life at school owing to his inability to lie or master humour and his apparent genius-level intellect which sets him apart from his fellow pupils. He and Maria (who is also new to the school having moved recently to the area) meet and befriend Clyde Langer (Daniel Anthony), whilst Luke makes an enemy of Carl (Anton Thompson McCormick), an intelligent boy who envies his effortless intellectual superiority. The friends discover that Carl and three members of staff at the school have been replaced by members of the alien Slitheen family from Raxacoricofallapatorius, and that Luke has assisted unknowingly their plan to switch off the Sun by providing them with the equation they needed to run the machine that will absorb its energy. Luke tricks the Slitheen into resetting their machinery and most of the Slitheen are trapped in their secret room in the school and explode.