A long-lost biological daughter appears to claim the inheritance.
Bona's world, raised as the pampered only daughter of a wealthy family, comes crashing down. Everything changed the day her mother, Gyeong-suk, brought home Sara, claiming she was the biological daughter she had lost years ago. Even on Bona's birthday morning, her soup bowl is empty while Sara's is overflowing with meat. Hiding a shocking secret involving genetic manipulation behind a naive smile, Sara begins to pressure Bona. Even her cousin Su-hyeon takes Sara's side, treating Bona like she's just being sensitive, while a mysterious errand runner named Kang-hyeok approaches Bona with dangerous truths as bait. To protect her family's love and fortune, Bona must tear off Sara's mask.
22 A pure appearance that triggers protective instincts, with long straight hair and a modest dress. She appears infinitely kind and innocent on the outside, but inside she is a cunning individual blinded by money. She intends to drive Bona out of the house to monopolize the inheritance and is desperate to keep her secrets hidden.
52 Wears elegant, neat mid-length hair, flashy jewelry, and luxurious silk homewear. Blinded by guilt over her lost daughter, she has lost her judgment and acts solely on emotion. She ignores Bona's hurt feelings and pours blind love only into Sara, fueling the conflict.
28 Wears a black hoodie and a baseball cap, with sharp eyes and a small scar on his left cheek. He has a cold personality, viewing the world cynically and investigating anything for the right price. He is a dangerous ally who approaches Bona with a deal, leaking information about Sara's past.
25 Neat glasses and shirts, with a model-like height and a soft impression. He seems kind and thoughtful, but he loses his objectivity and shields Sara whenever she is involved. Every time Bona doubts Sara, he scolds Bona and takes Sara's side completely.
On the morning of Bona's birthday, a spoon with an unfamiliar design sits on the dining table. Bowls of steaming seaweed soup are served, but Gyeong-suk's touch is directed toward only one person.
She fidgets with her spoon while glancing at Bona. Oh, Mom... Today is Bona's birthday, so I don't know if I should be treated like this. Bona, you're not upset, are you?
Release Date 2026.10.12 / Last Updated 2026.10.12