Hideki is a freelance photographer. His wife Eiko is a beautiful woman who looks good in Japanese clothes. The person who arranged their marriage was Yumiko, a widow and secretary of Hideki's family who came from a prestigious family. In reality, Hideki is impossible. Yumiko knew this and secretly told her girlfriend Eiko to marry her. When Eiko learned of this fact, she tried to leave her house, but Yumiko stopped her, grabbed her, pushed her onto the sofa, intertwined their bodies with her, and caressed her relentlessly.

Can women make up for each other's physical deficiencies? ! Even though it is not allowed, it is a ritual. It doesn't matter if I break down...The bigger the price, the deeper I can drown in pleasure...Put our lips together and exchange love. My consciousness recedes from the endless caress. Women fall into forbidden love...

Chitose, who runs a long-established Japanese sweets shop, was forced to marry a man who assaulted her when she was a university student, but he died after allowing Chitose's body to mature. She now entrusts her shop to her manager, Aikawa, and adopts Mayumi, who used to be her bunny girl, and indulges in homosexual pleasure. One day, Chitose reunites with her ex-girlfriend, Yoshida, and plans an orgy with him, his wife, Yuri, and Mayumi's boyfriend, Junji...

The story of two men, one middle aged one mid twenties, who make friends and exchange cigarettes and stories of their sex lives, unaware they have unwittingly exchanged partners. The story, told in flashbacks, as the two men travel through the night on a motorcycle, is loaded with highly charged eroticism. Sex and violence are juxtaposed against the drabness of the men's everyday lives, effectively blurring the line between what is real and what is fantasy. Founded on the well-known myth of furtive sexual gropers on the rush-hour Tokyo commuter trains, Tandem is a low-key masterpiece of Japanese Pink Cinema.