.hack//G.U. Returner

"There is something I wish to entrust to you; come to the hidden Forbidden Festival," is the message that the Twilight Brigade received from their leader, Ovan. Upon his orders, Tabby, Shino, Yata, Pi and Atori head to the festival, but Ovan is nowhere to be seen. However, things become dangerous once Tabby opens a stray treasure chest that contains an unusual monster! The team must now defeat the monster, discover its nature, and figure out the reason why Ovan invited them to this place...