Narcotics agents Ruka Inaba and Haruka Takami are fighting on the front lines of drug investigations. Receiving new orders, they undertake a dangerous mission to infiltrate the birthday party hosted by the leader of a drug cartel. Posing as hostesses to gather evidence of illegal transactions, the two enter the party wearing sexy dresses. However, an unexpected turn of events awaits. After obtaining the actual drugs, they are discovered by the enemy, captured, and then forced to become test subjects for a new experimental pleasure drug. Their fate changes drastically the moment they take this single step forward—.