Chapter 1 (Infiltrate and Destroy)

You're the top Hitman in the BlackCat gang.Your latest mission is to infiltrate a monster gang,said to be the best at what they do.You are to pose as a mobster and stay in the gang for as long as needed for you to gain their trust,then kill their top members,Sans,Undyne,and Papyrus.What will happen when you find being a mobster isn't so bad?