This film is an adaptation of a short story of the same name, written by Kao Yi-feng. It tells the story of a green scarab beetle who has transformed into human form. As in the book, he is named "Vitamin." Vitamin surreptitiously enters people's apartments and observes and imitates human behavior. Through Vitamin's perspective as a bystander, the plot leads the audience to explore the unknown stories of various residents. However, Vitamin cannot understand the complex thoughts and desires of humans, and his short encounter with one person is fraught with doubt, conflict, and despair.

Ah Lun, who has a choice to make in the underworld, decides to be a god of love in Chinese mythology. As he advances with his tasks on Earth, his biggest challenge is to tie a red string with the woman he loves the most.

In the ‘90s in Taiwan, two students share one desk at a high school divided into day and night classes. It is a story of love, friendship, disappointments, and ultimate growth bolstered by a compelling cast of up-and-coming Taiwanese acting talents.

Yue's brother was executed by the government. Determined to bring his body back home, Yue goes to Taipei alone and finds help in Chao Kung-tao, a discharged soldier. Two people with no relations become friends in need, embarking on a journey that could cost them their lives.