The dungeon itself turns against the Magic Knights as they fight to escape--and to keep a badly wounded Asta alive. Mars remembers how he came to be.

Cast: Bryn Apprill, Tia Lynn Ballard, Justin Briner, Shawn Gann, Jill Harris, Brad Hawkins, Ken'yû Horiuchi, Mao Ichimichi, Gakuto Kajiwara, Jason Liebrecht, Bryan Massey, Ayumu Murase, Asuka Nishi, Dallas Reid, Tyson Rinehart