"My Mom! Super Mom!" is a drama about the family and the ways it grows.

Choi Kang (Jin Won) is a 17-year-old freshman in high school. He does not study well, but has a bright outlook. His dream is to be an action actor, so his hobbies include exercising and sports. He is absent-minded and loses pretty much anything. With his positive character, he gets by his mother's scolding.

Choi Kang's mother Ko Min-Joo (Shim Hye-Jin) does everything for her family and their education. She is a typical Korean mother figure. Min-Joo lives with a fastidious mother-in-law, incompetent husband and two kids. She takes care of family and work.

Choi Kang' s father Choi Man-Suk (Jeong Won-Jung) is an unknown theater actor. Sometimes he makes troubles, but for his family he works part time without them knowing.

Choi Geon (Lee In-Sung ) is the second son of the family. He is smart, but somehow fruity.

Choi Hoon (Kim Ha-Neul) is a 17-year-old freshman in high school. His cousin is Choi Kang. Choi Hoon studies well, but he doesn't speak much and often looks indifferent. Inside he is frail and looking for love. Choi Hoon becomes a rival with Choi Kang over Eun-Ki (Woo Ri).

Oh Chae-Rin (Park Min-Ji) is also a 17-year-old freshman in high school. She is a perfectionist. Chae-Rin is also stubborn and tough, but inside she is feminine and soft. Chae-Rin comes to like Choi Kang.