Jin Hee is assigned to monitor Chang Min's mother when she's admitted to the hospital. Meanwhile, Jin Hee and Chang Min's elevator surgery has consequences that affect the ER.
Chang Min becomes jealous when he notices Jin Hee and Chief Gook spending a lot of time together. Jin Ae's husband and son show up on Jin Hee's doorstep.
As Chang Min tries to respect Jin Hee's feelings, their mothers let their secret out of the bag. Chang Min's father's health struggles are not getting better.
The aftermath of the latest spat with Professor Ahn helps Chief Gook to realize some of his feelings. Chang Min and Jin Hee start to think about their future.