Putting the spotlight on the world of medical oncology, a field which specializes in the treatment of cancer, Kokoro Onda and Kaoru Kajiyama who both begin to work as buddies, play a major role in the process of helping those in most need.

After taking on the advice from her co-worker, Kokoro decides to take a break to reflect and share her sorrowful feelings with the trustful family. Meanwhile after going back to her work as a medical oncologist, a journalist come to approach her…

Kokoro and Kaoru gets called up by a doctor in one of the specialist’s department, as they are told that a worrying discovery has been made in one of the echos…