Brandon and Aiden go to Las Vegas for Aiden's bachelor party. Even though the duo is being chaperoned by Brandon's little brother- Devon- Brandon is determined to make this the Best Bachelor Party Ever. Meanwhile, along with Devon's help, Margo plans on keeping not only her best friend- Gillan- safe from the sins of the city, but also her husband. However, between a mix of alcohol, singing, and a map, Brandon and Aiden overpower Devon's protests and find themselves wanting to cement their bond of friendship through marriage while wearing Chippendale bow ties.