When Chell Escapes the Aperture Science Enrichment Center, she drops her portal gun on a place called Domino City. Also A scienticist finds it, he sends it to be duplicated and installed in the duel disk from kaiba corp. Then Chell sees Card game players playing card games in portals, its gone MAD.  

In an alternative universe where Vampires rule the world Seto Kaiba has to decide to make a change or go on as his Father (Gozaburo Kaiba) has for Centuries. The descion will be for him to make. It is an enticing story about good verses evil, right verses wrong. Love. Hate. Battle for power. Bust most importantly it is a love story between a man and woman.