Yu-Gi-Oh! 5D's - Episode 125

'''Fighting Souls! Polar God King Thor VS Scar-Red Nova Dragon''' is the one-hundred and twenty fifth episode of Yu-Gi-Oh! 5D's.

Jack's Ace Monster, Red Dragon Archfiend, is destroyed when Dragan summons Thor. Jack is forced into a defensive position in the presence of Polar God King Thor, and has his Life Points cut down by a significant amount. However, Jack ends up successful in this raging battle, as he performs a Double Tuning, summoning Red Nova Dragon!