"Want me to help you? Then get on all fours."

In-woo, a sex toy reviewer who even posts proof of his own climaxes, becomes entangled with three men:
Kang-won, the owner of the adult shop Hot Bar;
Tae-chan, his longtime friend and casual sex partner;
and Jae-min, a major TV personality who has his eyes on In-woo.

Caught between three men whose true intentions are impossible to read, In-woo slowly begins to spiral downward…