Like most kids, Thomas just wants to fit in or at the very least slip under the radar so that he doesn't stand out and get made fun of. This proves hard to do when his pregnant mother Maggie (Toni Collette) is forced onto bed rest and his father Simon (Erik Thomson) puts him in charge of Charlie. Almost immediately Charlie causes more than his usual share of trouble. He plays with his own feces at the house and then escapes one day to run half naked down the street to pee in a neighbor's bathroom where the cutest girl in Thomas' class just happens to be taking a shower. But the girl, Jackie (Gemma Ward), ends up liking Thomas anyway, or maybe because of the special circumstances of his life.