Social work Koko has little respect for her ex-convict father. Once Koko gets to know Fat Cat, of low IQ. He lives with his mom in poverty and is abused by bad guys. Later, Fat Cat's mother died. The grief of Fat Cat enlightens Koko and her relationship with her father improves. The bad guys abuse Fat Cat's late mother. He captures one guy in violence. In confusion, the hostage and Fat Cat both dies.