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Director Choi puts his job on the line in order to gain Sung Won Hospital's trust in hiring Park Shi On, an autistic savant, as their next doctor.

When a child patient suffers from a poorly executed surgery, Shi On takes matters into his own hands, causing trouble for Do Han.

The life of a premature baby is in the balance when Shi On volunteers Do Han to perform a very risky surgery.

The parents of the children in the Pediatric Ward feel uneasy with Shi On as their assigned doctor when despite his vast medical knowledge, he continually fails to interact with the patients properly.

The death of a patient takes its toll on Yoon Seo and has Shi On and some of the patients questioning the existence of heaven.

When a severly troubled child is admitted into the pediatric ward, Shi On is determined to help her. Meanwhile, Manager Ko sees this as another opportunity to get rid of Shi On and Director Choi.

When Shi On is forced to take responsibility for Eun Ok's rampage, Yoon Seo has a hard time accepting his dismissal.

When Shi On returns the Pediatrics Surgery Department, a child star is admitted and diagnosed with a condition that may ruin his future in singing.

When Kim Do Han is adamant about transferring Shi On to another department, Shi On is determined to prove himself and hang on to his dream.

After Shi On successfully assists with a surgery, the Pediatrics Department is in high spirits until an expecting mother is forced to put her baby up for adoption by her cruel mother-in-law.

Do Han gives Shi On a special assignment in order to challenge him, but Shi On is too distracted by his feelings for Yoon Seo.

Do Han continues to push Shi On in order to get over his psychological trauma, but a surprise visitor may do just the opposite.

The return of Shi On's father brings back a tremendous amount of psychological trauma, causing an interruption in Shi On's abilities.

When no other surgeons are available, Shi On must try to overcome his trauma in order to save a patient's life. Meanwhile, Yoon Seo begins to distance herself from Shi On.

A child is rushed to Sung Won Hospital's Pediatric Surgery Department when she's stabbed by a random stranger. Chae Kyung begins to regret her recent actions.

Do Han is injured while trying to save a patient from a murderer. Vice President Kang is in a bind when Boston Hospital refuses to perform a high risk surgery on his son.

When In Hye undergoes septic shock, her near-death experience gives her a new perspective on things. Another person from Shi On's past makes an appearance.

Do Han's negligence for his wound almost puts a patient in danger. Meanwhile, the staff prepares their annual skit for the children in the Pediatrics Ward.

Shi On is worried about Yoon Seo when news of them dating spreads throughout the hospital. In Hye's surgery date finally approaches.

The doctors all feel helpless when complications arise after In Hye's surgery. Shi On and Yoon Seo must overcome the prejudice surrounding them.