SEX is the ultimate expression of love for humans. During that SEX, everyone thinks "I don't want to be separated from my loved one... I want to be connected forever..." So how long can people be connected? In order to answer that question, three men and women will challenge the limits of human sexuality! There is only one rule, 'continue to insert your dick into this'! ! As expected, who was left until the end! ? This is the first form of love that humanity has ever seen! !