Mina and Harley are desperate to go to CUMICON, an event where they can cosplay as their favorite anime characters. They have their costumes and everything but their ride fell through, so they start looking for alternative ways to get there. It all comes to their nerdy stepbrothers Diego and Elias to take them to the convention, but the guys are in a “too cool for school” phase and don’t want to help their little stepsisters. Determined to go to CUMICON, the naughty cosplayers try a sexy approach with their dorky stepbrothers that can’t go wrong.