Titre original : Curse This Curse (Marcus's Bad Day)
Thomas invites Kristy, Marcus, and Agumon to his mansion for lunch. Marcus becomes the unfortunate victim of strange unexplained accidents. Agumon sees the culprit is a Soulmon, who is invisible to everybody else except for him. Marcus and the others do not pay attention to Agumon's warnings, and the pranks become more frequent and more dangerous.