xxxHOLiC Movie: Manatsu no Yoru no Yume

A mysterious invitation draws Yuko to an auction in an old mansion, accompanied by Watanuki and Domeki. They join a group of avid collectors, but their host remains absent and no one can explain what is supposed to be offered for sale.

As night settles over the mansion, disturbing events unfold and guests begin disappearing. Watanuki and his companions must uncover the purpose of the gathering and the identity of its owner, navigating a house whose collection may be far more dangerous than it first appears.