When a boy turns 18 he has to accept the fact that he's no longer a boy and from now on has to meet life's challenges as a man. Newly-minted 18 year-old Josh's first challenge to meet is how to deal with embarrassment. Presenting this challenge -- his grandparents, led by grandpa, who looks like he might've worked playing keyboard in a few bars back in the 60's and 70's. As for grandma, maybe she was a go-go dancer. A loooong time ago. They performed an original blues song for their grandson. Don't even try living this one down 'til after college, Josh.