Cheat On Me, If You Can

Kang Yeo Joo, the famous crime novelist, spends her day locked up working on her new novel. However, her publisher needs her at her book concert. Knowing they'd show at the house, she makes a quick getaway to her neighborhood convenience store. Meanwhile, her husband, divorce lawyer Han Woo Sung, appears on all the networks and gets in the public's spotlight as the perfect husband. Later, Woo Sung steps out of a studio apartment after meeting with one of the female TV program hosts.

Yeo Joo reminds Woo Sung of her power over him and the Disclaimer of Physical Rights that got her to marry him. However, she now loves him enough to kill him. Baek Soo Jung, one of Woo Sung's very close acquaintances, doesn't show up for her morning show causing her manager to look for Detective Jang Seung Chul. Meanwhile, Soo Ho applies to become Yeo Joo's assistant, and Woo Sung prepares for his entrance into politics.

The detectives continue investigating Baek Soo Jung's disappearance at the studio apartment, but they find it rather difficult getting their hands on the CCTV footage. Later, the investigation into Soo Jung's disappearance gets official underway. And because of it, one person tries to find the truth behind it, and another frantically moves to keep it covered up. Meanwhile, Soo Ho finds blood in Yeo Joo's basement.

Woo Sung falls victim to blackmail and needs to come up with 50,000 dollars by tomorrow or risks having the CCTV footage of him entering Baek Soo Jung's studio apartment leak. However, he comes up with a plan with only 5,000 dollars in hand. Meanwhile, Yeo Joo continues to tag along with the detectives and leads them to find Soo Jung's trophy that could possibly be a murder weapon.

Woo Sung gets taken to the hospital after almost drowning in the Han River. Yeo Joo races over to the hospital to see him after hearing about the accident and sees a person she didn't ever expect to see there. Meanwhile, Soo Ho and a senior of his begin a secret mission to uncover the truth that Mr. Ma is trying to hide, while a floating body is discovered in the Han River. Later, Woo Sung's blackmailer suddenly appears and threatens Woo Sung again.

Although the police have Yeo Joo as a suspect, she plays it cool and believes that they can't pin anything on her without a motive. However, little does she know, the police have Woo Sung on camera entering Baek Soo Jung's studio apartment. Later, Woo Sung decides to tell Yeo Joo about his affair with Soo Jung, and his blackmailer collapses when he realizes he doesn't have the footage of Woo Sung anymore.