Bastion Misawa is up early, and stands on the shorelines, thinking that the Shadow Riders have been inactive recently, and that the next one will likely soon come. He vows that won't take his Spirit Key. He opens his jacket and takes out one of his Decks, and begins thumbing through it. He finds "White Magician Pikeru" in it, and comments that he doesn't recall putting it in there. He then looks around uneasily, then complains that the card is a silly distraction. He then says that nothing distracts him. Later, he goes to the Slifer Red dorm and wakes Jaden Yuki, Syrus Truesdale and Chumley Huffington using his "Barrel Dragon" card. He has them do early morning drawing exercises, and Chumley noticed Syrus has "Thunder Nyan Nyan", which he describes as his "card crush" (idol card in the Japanese version). Chumley has one as well - "Dian Keto the Cure Master". This angers Bastion, but he realizes that he too has one - "White Magician Pikeru".
In class, it is observed that there are many students absent. It's revealed that they (and Dr. Crowler) are hard at work building a coliseum in the forest at the behest of Tania, who reveals herself as the third Shadow Rider. The remaining Spirit Key holders and Syrus and Chumley journey to the coliseum. Tania states she doesn't Duel women, so Alexis Rhodes cannot Duel her. Professor Banner attempts to hide, so she needs to chose between Jaden, Bastion and Chazz Princeton. She settles on Bastion, and states that she doesn't want his soul - she wants his hand in marriage if she wins. Bastion chooses to use his EARTH Deck, while Tania tells Bastion she has two Decks - Knowledge and Courage. She allows him to choose, and he chooses the Knowledge Deck.
Eventually, Tania wins using her "Amazoness" cards and uses her pet tiger, Bass, to chase the remaining students out of the coliseum, leaving her alone with Bastion as night falls.
"Sigma Plus" attacks and destroys "Amazoness Swords Woman". Due to the latter's effect, Bastion takes all the Battle Damage that Tania would have taken from the attack (Bastion 4000 → 3700).
Since an Amazoness monster Tania controls was destroyed and sent to the Graveyard, Tania activates "Pride of Tribe", Special Summoning another "Amazoness Swords Woman" (1500/1600) from her Deck in Attack Position.
Bastion activates his face-down "Magnet Force Minus", equipping it to "Blowpiper" and treating it as a Minus monster. Due to the last effect of "Magnet Force Minus", Tania must use "Amazoness Blowpiper" to battle "Sigma Plus" when she enters her Battle Phase as Bastion controls a Plus monster.
Activates "Amazoness Spellcaster", swapping the original ATK of "Amazoness Blowpiper" and "Sigma Plus" for this turn ("Amazoness Blow Piper": 800 → 1800/1500) ("Magnet Warrior Sigma Plus": 1800 → 800/1500).
"Magnum Plus Minus" attacks "Amazoness Blowpiper". Due to the effect of "Magnum Plus Minus", it gains ATK equal to half the ATK of "Amazoness Blowpiper" until the End Phase ("Conduction Linear Magnum Plus Minus": 2700 → 3100/1300). "Magnum Plus Minus" destroys "Amazoness Blowpiper" (Tania 4000 → 1700).
At the End Phase, the effect of "Magnum Plus Minus" wears off ("Conduction Linear Magnum Plus Minus": 3100 → 2700/1300).
"Amazoness Swords Woman" attacks "Magnum Plus Minus". Tania intends to use the effect of "Amazoness Swords Woman" to make Bastion take all the Battle Damage that she will take from the battle between "Magnum Plus Minus" and "Amazoness Swords Woman". Bastion activates his face-down "Power Off", sending "Magnum Plus Minus" to the Graveyard and Special Summoning "Omega Minus" (1900/600) and "Sigma Plus" (1800/1500) from the Graveyard in Attack Position.
Activates his face-down "100,000 Gauss!", decreasing "Amazoness Paladin's" ATK by 800 ("Amazoness Paladin": 1900 → 1100/300).
Since a card that targets an Amazoness monster has been activated, Tania activates her face-down "Dramatic Rescue", returning "Amazoness Paladin to her hand" and Special Summoning "Amazoness Tiger" (1100/500) from her hand in Attack Position.
Due to the second effect of "Amazoness Tiger", it gains 400 ATK for each Amazoness monster Tania controls. She has two, so "Amazoness Tiger" gains 800 ATK ("Amazoness Tiger": 1100 → 1900/500). Due to the last effect of "Amazoness Tiger", Bastion is forbidden from attacking any other Amazoness monster besides "Amazoness Tiger".
Bastion formulates a strategy that will assure him victory. He will first attack "Amazoness Tiger" with "Omega Minus" which will cause a Double KO. He will then attack "Amazoness Swords Woman" with "Sigma Minus" which will cause another Double KO. Finally he will attack Tania directly with "Sigma Plus".
"Omega Minus" attacks "Amazoness Tiger", but Tania activates her face-down "Amazoness Archers", decreasing the ATK of every monster Bastion controls by 600 ("Omega Minus": 1900 → 1300/600) ("Sigma Minus": 1500 → 900/1800) ("Sigma Plus": 1800 → 1200/1500) and forcing them all to battle. "Amazoness Tiger" destroys "Omega Minus", "Sigma Minus", and "Sigma Plus" (Bastion 1200 → 600 → 0 → 0).