The final summer of student life, a pair of best friend high school girls travel together and stay at a guesthouse. But it's a horrific trap run by a sadistic owner. After being dosed with enhancers, the two lose all shame and self-control, gushing fluids mixed with involuntary releases in convulsing climaxes. Their immature bodies are relentlessly filled with warm essence, taking turns until total surrender to pleasure. The precious trip with their dearest friend turns into an inescapable nightmare...