Marlin has only child that he is really love and care his son, Nemo. Years later, on Nemo's first day of school, he's captured by a scuba diver and taken to live in a dentist office's fish tank. Father and his friends tried to rescue Nemo from the dentist's office. Nemo and the other sea animals in the dentist's fish tank plot a way to return to Sydney Harbor to live their lives free again.