Synopsis：After the sudden death of her twin sister, Hanin discovers a diary containing Hana's final dream and secrets about her life at Sirius High School. To fulfill her dream, Hanin disguises herself as Hana and enters Sirius High School. Unfortunately, in her disguise, Hanin finds herself trapped in the absurd lives of 12th-grade science students and becomes involved in a love triangle with Joan and Jarvis, two handsome men who each harbor their own charms and mysteries.