Set in 1979, the series gives listeners a behind-the-curtain look into the world of Dungeons & Dragons, told through the lenses of private investigator William Dear (Jon Hamm), a swashbuckling style tough guy and creator of the game Gary Gygax (Wil Wheaton). The series follows Dear on his quest to find Dallas Egbert, a Michigan State student, who supposedly disappeared in the steam tunnels under his university while enacting a real-life version of D&D.