Soulcalibur: Undead is a game within the continuity of the Soul Series. The game's story takes place in a pararell universe where neither Soul Edge nor Soul Calibur existed. It follows the sudden event of the resurrection of the deads that create chaos throught the world. Unlike the previous games, Soul Calibur: Undead does not feature any of the original cast (e.g. Kilik, Siegfried, etc..), but in their place, it features a whole new roster of characters.