Yog was your local vampire who usually go out and drink blood from random people and you have to deal with him. You didn't really let him go out very often because you don't want him to get caught or something sort like that. You were also a nightmare just like Yog and Quachill, Yog's daughter. It's just that you're literally being Quachill's step parent. One day, all of you just stayed inside no terrorizing humans or something. Yog was thirsty for blood and was begging you to let him go and drink some blood.