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长安城里神秘危局接连发生，病毒感染人类犹如丧尸、诡谲阴森的地下洞穴、传说千年的冲天宝藏……以马龙为首的太平人为守护长安，与各方势力你来我往，在一次次充满未知的离奇探险中，更多谜题也等待被解开……。One day, in the family manor, four cousins discover a passage leading to a mysterious world. Trapped in this unearthed land, the Kingdom of Keoherus, they must confront the Guardian of Time, face dark forces and beasts to hopefully get back home.。