[1] It is also known under its previous title Shut Up Family (Korean: 닥치고 패밀리; RR: Dagchigo paemilri).

Woo Shin-hye is a divorcee who lives with her vain mother and two beautiful daughters — the older one who cares deeply about her image but is secretly a slob, and the younger who is intelligent and seemingly kind, but has a sly and cruel personality.

Yeol Suk-hwan is a widowed and enthusiastic single father who works at a Youth Centre to support his poor family.

He lives with his greedy but kind mother-in-law, and three children — two sons, the oldest who is a bread errand boy and is bullied in school, and the youngest who is an innocent but slow child, as well as a smart, strong but homely daughter who others mistake for an older woman.

Now that the two families live under the same roof, conflicts constantly arise due to differences in personalities and lifestyles.