Yuki is a female college student working part-time as a dispatched tutor. She is dispatched to a house where her father lives with his shut-in brother and his high school student brother. One day, she tells him that she likes her teacher and can't concentrate on her studies, and he forces her to give him a blowjob. Her shut-in brother sees her and threatens to tell everyone, forcing her to have sex with him and even taking pictures...