In the world of .hack//G.U. and .hack//Roots, the familiar characters receive a compelling email from Ovan, beckoning them to the enigmatic Hidden Forbidden Festival. This festival, shrouded in mystery, introduces them to an AIDA Chim Chim seeking harmony with players in The World. As this creature morphs into the word 'Returner,' hope stirs among the group, hinting at Ovan's possible return to their digital realm.