"Invitation to the Dark Duel" is the fifty-eighth episode of the Yu-Gi-Oh! ARC-V anime. It first aired in Japan on May 31, 2015.
'Promoter' Gallager appeared before Gong and Dennis, inviting them to an underground duel arena! While Gong wants to reunite with the rest of the Lancers, Dennis wants to look for strong duelists to ally themselves with there. Much to their surprise, Shay was participating in a Turbo Duel there, with the same aims as Dennis. In spite of Gong's objection, Dennis challenged Shay to a Turbo Duel to determine which of them shall try to reach Jack Atlas!