The monsters of the Underground have finally been freed and have been trying to integrate into the local human community. Unfortunately, most of the local humans are very religious and consider the monsters devils, sex mad, and full of sin and corruption. All monsters are ostracized because of this, to the point where many have moved back into the caves they had just been freed from. One night, Isabella is saved from death by one of these "demons." She later finds out that his name is Sans. After more conversation, she realizes that he-and by extension, all monsters- aren't evil creatures, they just live differently. One day, Sans suddenly asked Isabella out on a date! Will she say yes? Will their relationship stand against the bigotry thrown against them? The answers are yes and yes but also no.