To repay a debt of gratitude to Aaron Miller's late father, who had mentored and cared for her, Selena Kane marries Aaron. For years, she has juggled her career and family, dedicating herself to caring for the Miller family. She is especially attentive to her mother-in-law, Florence, meticulously managing her health and catering to her every need.
However, the Miller family completely ignores Selena's contributions. Florence repeatedly fails to listen to reason, causing trouble that Selena must always clean up to hold the family together. Not only is her mother-in-law ungrateful, she even blames Selena for everything.
After enduring this life for years, Selena learns from a friend about a job opportunity abroad. Having never considered leaving due to her family, she is shaken when, just before the New Year, she takes her mother-in-law for a check-up and is blamed and pushed to the ground. Her husband, Aaron, and daughter, Mia, just watch and laugh. She finally realizes the Miller family doesn't care about her at all. As the holiday nears, her mother-in-law's antics worsen, causing Selena's own health to falter, goading the injured Mia into dancing until her leg is permanently damaged, and on New Year's Day, insisting on eating spoiled cured pork out of stinginess, even slapping Selena.
Only after Selena leaves do Florence and the others realize they can't live without her. The household was orderly only because of her. Once she's gone, all the piled-up problems explode, their lives descend into
