Amagi (Kazunaru Amagi) who has a heart disease since young finally collapses. Saeki (Seiyō Uchino) leads the operation with Sera (Ryoma Takeuchi), however the only way to save him is performing direct anastomosis and Saeki Method at the same time.

Arriving at the operation room is Amagi’s twin younger brother, Tokai (Kazunari Ninomiya/double role). When asked by Saeki if he can perform direct anastomosis, he laughs replying, “I won’t perform a gamble like that.” Will they be able to save Amagi’s life!?

The reason why Amagi requires a 50:50 gamble before an operation, how direct anastomosis was born and his tragic past…! The hidden past behind Black Forceps is also uncovered…