William a 30 old year man, a loner that live by himself was outside doing some Christmas shopping when some bump into him making his lose his balance as a car was passing by, now he reincarnated in the body of an ill-tempered and pampered 5 year old boy, after being hit in the head in an accident he remembered all the memories of his past live, now he would try his best to make the same mistake he had done before.