Transmigrating into a book to become the female lead's stepping stone, Gu Xia suffers biased oppression from her master, causing her cultivation to plummet. Decisively breaking her disciple decree, she runs away and plunges headfirst into the legendary number one cultivation sect, Taiyi Sect, where everyone is destined to become demonic cultivators. Thinking it is a dead end, she unexpectedly finds the sect crawling with eccentric crouching tigers and hidden dragons: a face-blind eldest senior brother, a house-demolishing sword cultivator second senior brother, a sweet-girl-obsessed third senior brother, and a fist-swinging merman pill cultivator fourth senior brother all gathered in one place. Gu Xia is thrilled—since you are all crouching tigers and hidden dragons, then I, your junior sister, am simply the best among them.