With Calvin down a teammate for his annual bowling championship, Dave offers to fill in and soon finds his mediation skills put to the test when he meets the competition: Calvin’s arch-rivals, the Pink Ladies. Also, Gemma and Tina dare to face off against each other for the top ranking in an arcade game.

When Calvin's arch-rivals, the Pink Ladies, move their manicure business into the local barbershop, Dave encourages him to make peace until the women take a prank too far and the guys decide to plot revenge. Also, Gemma helps Tina find a creative way to keep tabs on Marty and Malcolm's dating lives.