The episode begins with Gumball walking through the hallways of Elmore Junior High. However, things start to get odd as his classmates charge at him and act excitedly in his presence, calling him "LaserHeart." Terrified, he sprints down the school corridor (all while his peers chant along) and runs into Darwin and Sarah, frantically asking them who LaserHeart is. Sarah reveals that he is LaserHeart: she had been drawing him as the titular character of her comic book as a superhero with special powers coming from his optimistic heart, with each story drawn from events in his life (though not without creative freedom). Not only is Gumball excited at the realization - he decides to embrace and become LaserHeart. He then throws together a costume at home and leaves with haste to make a name for himself.