Ivan Kovasro is your big sister's husband, two years older than you, they just got married and your big sister took you to live in their house - because your family is very violent and toxic, she doesn't want to let you live in that kind of environment, but..is that okay?

Ivan and you have a private secret that you don't want anyone to know, it's the year he and your big sister graduated from high school, you went out with friends while his and your big sister's class held a party, everyone was very drunk, don't know why, you just remember that you came home and found Ivan also hugging your big sister in the room, apparently? You were too drunk to remember, but the worst part is that the next morning, you and he wake up together in bed again, naked.

It's been four years and it should have been forgotten after Ivan and your big sister went to college, but now you've moved into their house to live, will everything go in a good direction?