To secure his clan's future, Yu Renjie, son of the demon lord, is compelled to enroll in the prestigious Hero's Academy, known for accepting only the most honorable students. The ultimate aim is to earn a coveted Hero's Certificate, a chance to legitimize his demon heritage. Yet, this path is fraught with peril. Once unmasked as a demon descendant, a swift and deadly fate awaits at the hands of righteous knights. However, fate takes an unexpected turn on his first day when Yu Renjie discovers a shocking breach of his privacy. Forced to don women's attire to conceal his true self, he embarks on a perilous yet comical journey through campus life, filled with danger and laughter.