Yugi, Atem, and their friends fly to Ireland for a Duel Monsters Tournament finals. When an evil sorceress threatens to bring the monsters to life the friends will join Skulduggery Pleasant and Valkyrie Cain to solve the mystery. But when one of team turns out to be related to the new villainess, will their mission be jeopardized? Story being copied to group (link on my profile).

When a tip about strange, powerful artifacts sends Skulduggery and Valkyrie to New York, the last people they expect to collide with are duelists. Haven't read/watched Yu-Gi-Oh or Skulduggery? Then this story will make no sense to you. Leave it alone.