Weaving two stories set 30 years apart, First of May is about a middle-aged man looking back at his teenage years, dreaming of his first and possibly only love. At the center of the drama is Bai, a 17-year-old student living with her single mother Wong Lei, and her grandmother. Bai gradually falls for her admirer/stalker Yeh, who is always walking behind her and her best friend Wen Wen wherever they go.
Yi-Ming, whose husband works outside of town, lives alone with her son. After years apart, she reconnects with Ting-Ting at a wedding, a girl she was intimate with back in high school. The encounter with Ting-Ting not only sets Yi-Ming free from her oppressive marriage, but also reawakens her feelings for Ting-Ting. Now that Taiwan has finally legalized same-sex marriage, will Yi-Ming have the courage to change her life?
A group of high school girls is Copper Dimension's last defense against the dark forces. They signed a contract with Xiong Ya, a guardian of light, to protect the innocent with their lives in exchange for having one wish come true. When one of their own is killed in school, their hunt for the devils in human skin brings them face to face with their own inner demon. They soon discover they are not above the influence of evil.
