Shihyeon is known as “Red Candy,” is a secret spy who gets his code name by soaking in the blood of his marks on risky missions. Shihyeon has been assigned the mission of seducing and gathering information from Hajun, a gorgeous university professor. Shihyeon is capable of disarming opponents, but he didn’t expect to be disarmed by Hajun. Shihyeon is now torn between his spy agency’s devotion and his feelings for Hajun. Could Red Candy withstand the attack of upcoming enemies while still savoring the sweet joy of Hajun’s embrace?