Michelle and Allen, who have reached the point in their relationship where they are considering next steps, decide to invite their parents to finally meet and to offer some understanding of why marriage works. Except the parents already know each other quite well, which leads to some very distinct opinions about the value of marriage.

Two would-be rockers from San Dimas, California, are once told they'd save the universe during a time-traveling adventure, but find themselves as middle-aged dads still trying to crank out a hit song and fulfill their destiny. Out of luck and inspiration, Bill and Ted set out on another time travel adventure to seek the song that will set their world right and bring harmony in the universe as we know it.