Hailing from Hong Kong, the Paper Sisters form a trio that shares a special bond despite their individual personalities. Michelle, who is driven by her love for books, is an idealistic visionary who often finds herself lovesick. Maggie, a timid book enthusiast, is frequently mistaken for being male. In contrast, Anita is a sporty girl who has little interest in reading. What unites these three unlikely friends is their unique ability to manipulate paper in any way imaginable. This talent proves invaluable as they tackle a wide range of book-centric mysteries in their detective agency.