Syd Is Vicious / Proud Demon Chaos King.Jack and Carly investigate some Duel Runner thefts. While chasing after a group of them, one of the members, who is actually an undercover agent named Kaz, gets injured. Jack feels responsible for causing the accident, and tries to investigate the matter himself, but is ganged up on and knocked out. He doesn't give up, and soon comes across the entire gang again, where he is once again beaten. However, he was able to place a tracker on one of the members, and finds their hideout, which is located on a large ship. The boss, Syd, challenges Jack to a duel in which the loser is thrown into a crusher. Syd gets the upper hand early on, and despite Jack summoning several monsters, he still finds himself countered. It is soon revealed that their hideout is on a tanker, which has sailed out of range from Sector Security. Syd summons his Synchro Monster, but Jack responds by Synchro Summoning a monster he borrowed from Kaz to win the duel, and manages to act in time before Syd is crushed, but beats up Syd and his gang, who are later arrested by Sector Security. Jack returns Kaz's card and promises to Turbo Duel him when he recovers.