The doctors on the hospital ship go through hardships together and bond. They embrace each other's pain and become closer. In Eun Jae's heart, Hyun takes place.

Hyun patiently waits for Eun Jae to open up to him, but Eun Jae is still confused by her feelings. Also, the presence of Hyun's ex-girlfriend becomes a variable in their game of love. Meanwhile, a patient with Vibrio vulnificus infection comes aboard.