Inoue has a secret sexual relationship with her company colleague and contemporary, Nomiya. She also harbors romantic feelings for another contemporary, Nikido, craving both thrills and love. One day, she decides to have sex at Nomiya's place and shows up unannounced. Just as they start, Nikido unexpectedly arrives! It turns out that Nomiya and Nikido are roommates, and the three of them end up in a forbidden triangular relationship…！！
