Cheat On Me If You Can

A famous crime novelist, Kang Yeo Joo, avoids her publisher to work on her new book. Meanwhile, her perfect husband, a high-profile divorce lawyer, Han Woo Sung, meets a female TV host after work.

Yeo Joo reminds Woo Sung of the promises he made during their wedding. On the other hand, Detective Jang Seung Chul is called in to find the missing Baek Soo Jung, a close friend of Woo Sung.

The detectives investigate Soo Jung's apartment to find clues behind her disappearance, but they are unable to access the CCTV footage. As the investigation continues, many try to cover up the truth.

Woo Sung is blackmailed to come up with fifty thousand dollars in a day to stop a video of him related to the case from being leaked. On the other hand, Yeo Joo helps the detectives with the case.

A drowning Woo Sung is rescued from the Han River. Yeo Joo rushes to the hospital to see him. Meanwhile, secret agent Soo Ho and his senior find a new case. Later, Woo Sung's blackmailer returns.

Yeo Joo becomes a suspect in the Soo Jung case without knowing about Woo Sung's video. Later, Woo Sung decides to confess about his affair to Yeo Joo. Meanwhile, his blackmailer loses the evidence.