Saori has a stepson called Masaru. One day he asks him to pay his aunty's house a visit in order to pick something up. What is harmless at the start soon turns out dramatic. Masaru has to witness the horny aunty satisfying herself. The aunty is so out of it that all of a sudden she starts to grab Masaru. She wants to fuck him. As a consequence Masaru forgets all about his initial task and as such is late. This is why Saori decides to visit the aunty herself. She has no idea what she is about to see...