Teru Mahigashi is a surgeon who has just graduated from medical school. Saving lives and helping people is the purpose of his chosen profession, and he seems quite good at it, when he is not screwing up. People wonder why he decided to become a doctor, given how clumsy he is, until his past begins to reveal itself, and his ability to save lives becomes apparent with each operation... Gradually, Teru and all of his colleagues will make a huge change in the medical world.