Mask

Due to her father's surmounting debt, Ji Sook begins to live under a different identity as Eun Ha, who hails from a wealthy family and looks like Ji Sook. Min Woo, heir to his family's corporation, is engaged to Eun Ha.

Min Suk Hoon makes Ji Sook an offer of a lifetime. Min Woo suspects he might have been drugged.

Suk Hoon introduces Ji Sook to her new life as she transforms into Eun Ha. Min Woo threatens Eun Ha.

Eun Ha is asked to take a VIP client shopping in the department where she used to work as Ji Sook. Mi Yeon becomes suspicious of her husband.

Eun Ha brings Min Woo to the local markets so he can understand who he will be displacing with his new mall. They were not expecting to be recognized. Ji Hyuk is determined to confront Eun Ha.

Eun Ha has to convince Ji Hyuk that she is not his sister. Mi Yeon tells Eun Ha how she feels about her. Someone has sabotaged Min Woo's car.

Eun Ha tries to repay Byun Dae Sung's debt and realizes that is is more challenging than she expected. Min Woo and Eun Ha share drinks and secrets.

Eun Ha and Mi Yeon start working at the main office as entry level employees. Min Woo digs deeper into Eun Ha's private life.

Eun Ha risks everything to save Ji Hyuk. Suk Hoon convinces Eun Ha to help him bring down Min Woo.

The District Prosecutor is looking for evidence of bribes and finds something else. Eun Ha thinks she is choosing to help Min Woo over Suk Hoon.

Eun Ha makes a confounding confession to the board of directors. Suk Hoon finds himself in trouble when a handoff doesn't go as planned.

The family throws a party to celebrate Eun Ha's birthday and the news that Mi Yeon is pregnant. Min Woo goes out of his way to impress Eun Ha.

Mi Yeon gets some upsetting news from her doctor. Eun Ha is given a coffee shop to run while Min Woo tries to figure out how to propose to her. Suk Hoon learns an awful truth.

Eun Ha and Min Woo get closer in the country. Mi Yeon is relentless in her quest to bring the truth to light.

Suk Hoon tries to keep his plan on track. Min Woo learns who his wife is.

Eun Ha ups the stakes and tries to force Suk Hoon out of the house. Mi Yeon worries that Suk Hoon might hurt her brother.

Mi Yeon asks for time to get proof of Min Woo's wrongdoings but sets her own plans in motion. Min Woo prepares for the day when his wife's identity will be public.

Eun Ha and Suk Hoon agree to a truce and plan an exit strategy, but neither has really given up the war.

Min Woo comes closer to learning the truth about where his wife disappeared to.

The events surrounding Min Woo's family's company come to a dramatic conclusion in the series finale.