Guardian Season 1 Episode 1 Bai Yu and Zhu Yilong go against the world and sing together to help each other with a thought of good and evil ( Air Date 2018-06-13 ) Genre Crime, Mystery, Sci-Fi & Fantasy category. Overview "A girl is killed, and Zhao Yunlan is put on the case. He speculates that another student, Li Qien, is the real target, and is intrigued by a reserved Professor by the name of Shen Wei who knows more than he's willing to share.".