Xia Ran, an extremely ordinary office worker, accidentally traveled to a parallel world where monsters are common and crises are everywhere. Just when he was despairing about his future, he accidentally activated the "Divine Light Sign-in System", and at the beginning he obtained the transformation device of Ultraman Tiga, the Divine Light Stick, from the ancient giant. From then on, Xia Ran's fate was closely linked to the survival of the world. During the day, he is an unknown technical analyst in TPC; at night, or when a crisis strikes, he is the giant of light who tears apart the darkness and brings hope! Facing the ensuing monsters and cosmic beings, as well as the suspicion and disputes within mankind, how will Xia Ran make a choice? Can he protect this hard-won light and become the true patron saint of the world?
