Synopsis：After catching her husband Jinho cheating with her friend Yerin, Hana is murdered—but wakes up back in the past. Determined to take revenge, she infiltrates Yerin’s life by becoming the secretary of Yerin’s fiancé, Dohoon, and deliberately sets out to seduce him while digging up dirt on Jinho and Yerin. As she investigates, Hana grows closer to Bae Shinwoo and finds herself tangled in a love triangle. Yerin’s schemes drive a wedge between Hana and Dohoon, forcing Hana to pull away from him. With Shinwoo’s help, she finally uncovers the evidence that can destroy Jinho and Yerin, but Yerin retaliates by kidnapping and attacking her. Dohoon takes the blow meant for Hana, revealing the depth of his feelings. With her revenge complete, Hana must now choose between Dohoon and Shinwoo.