Na Young is enraged at Su Ji for not keeping her promise to arrange a lesson with Ms. Son. U Ri is troubled by Su Ji’s abrupt change in demeanor ever since he mentioned seeing her cry at the hospital. Jang Soo is anxious as he frets over Mr. Gong disappearing. Meanwhile, the highly anticipated 50th-anniversary celebration at Haedeul Hospital unexpectedly leads to a reunion with Su Ji's former friend.