Mom favors the boys

The protagonist, Ahn Na-hee, has lived her entire life in the shadow of her brother, constantly facing discrimination. Despite the years of neglect, she still yearns for her mother's love.

When her brother announces he is bringing home the woman he intends to marry, Na-hee is filled with a sudden, desperate hope—a belief that this shift in the family dynamic might finally allow her to become her mother’s "number one." However, the person who walks through the door is someone entirely unexpected...

What choices will these three women—the mother, Na-hee, and the new sister-in-law—make? And in the end, what kind of "family" will they define for themselves?