Dexter is an extremely intelligent eight year old boy who lives with his parents and his annoying sister Dee Dee, who he is regularly in conflict with. He has a secret laboratory where he creates fantastic inventions. He manages to keep the lab a secret from his clueless parents. Despite his great genius, Dexter is still a young, naive, and inexperienced child who lacks wisdom and experience. Dexter also has a huge ego and this can lead to him sometimes making careless mistakes.