Keiko (Yoshitani Ayako) begins to suspect that her husband Shinichi (Seto Toshiki) is having an affair, but she has not yet realized that the affair partner is actually her sister Shiho (Asakawa Rina). When questioning her friend Yuka (Muraze Sae)The two quarreled.Keiko was heartbroken because she lost an important friend, and next to her, Shiho, the culprit, snickered... "Sister, you are always more unfortunate than me"——.

Wanting to see her sister's unfortunate face again... When Shiho's twisted feelings intensified, Keiko's unexpected luck came to her.She was pregnant with Shinichi's child.Keiko couldn't restrain her joy and immediately reported to Shiho.“Actually...I have a child.” Keiko put her hands on her belly and looked happy.Seeing Keiko's appearance, Shiho was so angry that his teeth itched.

I planned to push my sister from the peak of happiness to the bottom, but I didn't expect that I would also be pushed to the bottom... Anxious Shiho called Shinichi to the hotel, wanting to confirm his love for him, but it was over%... ShinichiBecause she had a child, she changed her mind and broke up with Shiho.

Keiko was finally satisfied in her heart...but that was only temporary. Wanting to destroy her sister's happiness, her sister stretched out her magic hand, causing tragedy...!!