Doctor Cha Jung Sook

Cha Jeong-suk witnesses a frightening incident and freezes amid the chaos. She later receives a scary diagnosis — sending Seo In-ho into a spiral.

Back from the brink of death, Jeong-suk decides to live life differently — claiming her independence by making an ambitious career move.

Jeong-suk's acceptance leaves In-ho and Choi Seung-hi reeling. Jeong-suk attempts to adjust to her new role — but finds opposition from all sides.

After an eventful night out, Jeong-suk gets closer with Roy Kim — irritating In-ho. At the hospital, she continues to struggle amid the chaos.

Rumors surrounding Jeong-suk and In-ho's relations arise. After Seung-hi puts her through the ringer, Jeong-suk wonders if she's cut out for the job.

Despite being singled out for praise, Jeong-suk faces belittlement from In-ho. Roy confronts In-ho about his behavior, later befriending Jeong-suk.

Jeong-suk clashes with In-ho about their daughter. She later finds evidence of her son's relationship. Seung-hi confronts Roy about his recent discovery.

In-ho panics after his secret is discovered. Confronted with conflicting requests, Roy faces a difficult decision. Jeong-suk begins connecting the dots.

Finally clued in on In-ho's secret, Jeong-suk begins acting erratically. After In-ho's mother pays her a visit, Seung-hi faces an emergency.

A public revelation leaves Jeong-suk in a tough spot. Seung-hi confronts In-ho about their future. Jeon So-ra lends Jeong-suk much-needed support.

Having reached her breaking point, Jeong-suk meets with Seung-hi and In-ho. Later, Roy and In-ho lock horns over their complicated emotions.

Seung-hi clashes with In-ho after choosing to hold her ground. Seo Jung-min spirals after experiencing a tragedy. Jeong-suk makes a resolute decision.

Jeong-suk attempts to move forward after making her decision — despite In-ho's persistence. Roy looks to find the truth about his family.

After finding out the truth, Jeong-suk's mother deals with her health. Seung-hi works hard to find a treatment. In-ho rebels against Jeong-suk's wishes.

Jeong-suk learns shocking news that may bring her career to a halt. In-ho's mother panics about a looming situation — putting In-ho in a tough position.

As everyone around her worries, Jeong-suk ties up her loose ends leading up to her procedure — all the while preparing for her future.