Young-soon panics about the future after she receives scary news. Another sudden blow forces her to make hard decisions about herself and Kang-ho.

Young-soon pushes Kang-ho to the limits. She later finds a perplexing item from her son’s old life. Mi-joo navigates her complex feelings around Kang-ho.

As Kang-ho recovers, he and Young-soon get closer. However, Young-soon later visits Seoul and witnesses unfavorable traces of Kang-ho’s life.

After retuning home, Lee Mi-joo encounters Kang-ho in his new condition. Young-soon faces aggression from an unrelenting neighbor.

Kang-ho experiences a mysterious attack. Mi-joo finds an fortuitous business opportunity. The town convenes to rally against Young-soon.

After a tragedy turns her world upside down, Jin Young-soon raises her son with the aim of steering him away from a life of hardship like hers.

Filled with childhood resentment, Choi Kang-ho navigates his career with ruthless ambition — later approaching Young-soon with a cruel motive.

A shocking accident leaves Kang-ho’s outlook uncertain. Young-soon takes him home and seizes an opportunity for redemption.

When an old building collapses resulting in several casualties, a disaster medical support team is dispatched to the site.

Wounded soldiers are rushed to Doldam Hospital. Ah-reum is left alone to tend to the emergency room when rogue patients suddenly cause a scene.

Patients rush into the emergency room while the staff tends to surgeries. Doldam Hospital falls into chaos as the gunman’s identity is revealed.

Patients injured in a residential fire are rushed into the emergency room. Woo-jin treats the suspected arsonist despite Dong-hwa’s criticism.

Cha Jin-man hates that Teacher Kim’s methods are deeply rooted into Doldam Hospital and takes everyone except Sun-woong and Dong-hwa to the trauma centre.

The trauma centre loses a patient and receives another patient in critical condition. Meanwhile, a child visits Teacher Kim at Doldam Hospital.

As the patient’s lung condition deteriorates due to tuberculosis, Teacher Kim opens the trauma centre operating room for Ri Bok-young’s surgery.

Doldam Hospital hires new personnel. The people of Doldam, who thought Teacher Kim would be the new head of the trauma centre, hold an emergency meeting.

The medical staff of Doldam Hospital fly out in a helicopter to a ship lost out at sea on behalf of Teacher Kim, who is absent on vacation.

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.

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.

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.

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.