Because the duel ends in a draw , both key boxes open. Joey dives into the sea to unlock Yugi’s shackles, and Tristan pulls Yugi to safety. Joey is nearly dragged down by the anchor until his sister, Serenity , removes her bandages and dives in to rescue him.
In the original series, Season 2, Episode 78 is titled "Friends 'Til the End, Part IV" (Japanese: "Attack Me! The Fatal Last Turn"). It originally aired in Japan on October 23, 2001, and in the US on July 19, 2003. Episode Plot Summary Watch S02Yu-Gi-Oh 78
This episode concludes the high-stakes "Anchor Duel" between Yugi and a mind-controlled Joey Wheeler, orchestrated by Marik Ishtar. Because the duel ends in a draw , both key boxes open
Note that "Episode 78" refers to different plots in other Yu-Gi-Oh! spin-offs: In the original series, Season 2, Episode 78