https://en.wikipedia.org/wiki/List_of_My_Three_Sons_episodes
The main characters are presented, including the three sons: Mike aged 18, Robbie aged 14, Chip aged 7, and Tramp the dog. The basic relationships within the family are established, that Steven Douglas is of Scottish descent, and has been a widower for 6 years. Steven and his youngest son Chip are caught in the snares of designing women. 2: 2