S01E09: The Lockdown Duel (1)

Yusei is transferred to a different cell, away from Yanagi. His new cellmate, Alex, plans to escape and offers to take Yusei with him, but he refuses to leave without Yanagi and Tanner. Meanwhile, Armstrong has been harassing Tanner, and Yusei ends up in a duel against him, using a deck built with treasured cards given to him by all the other prisoners.