Rainbow DoughnutRainbow Donut; 레인보우 도넛

Doctor, your shots are really unpleasant. Lee Inwoo, a member of the private mercenary group, SOT, approaches an ordinary doctor, Kang Dowoon, to retrieve the formula for a certain drug. As Inwoo gets closer to uncovering Dowoons secrets, he finds himself increasingly burdened by guilt for betraying him.