When Morty needs to learn how to play D&D to keep up with the cool kids, his hard-drinking, old school-gaming, mad science-making grandpa is happy to teach him how to roll the dice, but neither of them is prepared for the saving throws they’re about to fail or the true quest yet to come. Strap on a longsword and grab your 10-foot pole, because this is going to be a gaming gauntlet like no other! The world’s greatest role-playing game. Reality’s most dysfunctional family. What could go wrong?