Five-and-a-half-year-old Shen Xiaosuan has no spiritual roots, but she possesses a mind capable of calculating heaven and earth. Sold to Qingyun Sect, she became the smallest accountant in the immortal sect. While others practice immortality, she keeps accounts; while others refine pills, she calculates formulas; while others break formations, she clicks her abacus. A three-hundred-year-old black ledger of spirit stones leads her step by step from the dusty general affairs hall down to the Demon Suppressing Pagoda. With the Seven Stars missing one, the Heavenly Pivot about to awaken, the blood-stained note and old abacus beads left by her master pull out a "third person" living in the dark corners of the immortal sect. Carrying a half-foot-old abacus on her back, Shen Xiaosuan refuses to be a cultivator and refuses to calculate destiny. She will calculate a path to survival herself. All things can be calculated, and when accounts balance, the world is at peace.