Mabul plot
Everything in Yoni's life is complicated. He is almost 13, gifted but physically uneducated and he struggles daily with growing up. He almost becomes a bar mitzvah (a Jewish boy who turns 13 is then responsible under Jewish law). Yoni secretly buys a miracle cure that would make him muscular, but so far nothing happens. He also trains and does exercises. His new classmates, all older and two heads taller, nickname him "Helium" (because of his girlishly unstable voice) and bully him whenever they get the chance. A week before the important ceremony, his autistic 17-year-old brother returns. Tomer returns home, turning the lives of the entire family upside down.