Hiromi, who lost her child in a food accident 10 years ago, hates Yuki, the president of the supermarket that caused the accident, and plans to take revenge on him to "make him feel the same pain". She plans to take revenge on Yuki's daughter, Moeko. Hiromi is filled with murderous intent towards Moeko, but she stops herself just in time. Instead of killing Moeko, Hiromi begins to love her and decides to raise her.
And now, 10 years later... when Hiromi learns that Yuki has recovered and is running a successful business, she asks herself, "Has Yuki forgotten that his daughter disappeared?" and rekindles her desire for revenge, she approaches Yuki, but Hiromi realises that Yuki has been suffering for 10 years and that he is actually a sincere person. Yuki, on the other hand, gradually develops feelings for Hiromi "without knowing her true identity".
As Moeko grows up, Hiromi's love for her grows stronger. When Hiromi discovers Yuki's true face and the fact that he is also tormented by the crimes he has committed, Hiromi is tormented by her revenge, which is full of miscalculations.