After months of research and experimentation, filly Twilight Sparkle is at her wit's end in her search for something nourishing to feed her newly-hatched baby brother Spike. Desperate for a solution, she pays a surprise visit to her beloved mentor Princess Celestia long after bedtime has come and gone.

The Princess will provide an answer, though not in a way that either of them expects, as Twilight works feverishly to unlock the long-hidden mysteries of alicorn biology and deviant sexuality.

Tonight, it's Celestia's turn to learn a lesson: even a princess has no secrets in the sacred light of Science.

Contains: Herm/Futalestia, semen worship, genital worship, anal worship, beloved mentor worship, science worship, fantasy fetish gear, regular fetish gear, bondage, softcore foalcon, softcore adultcon, masturbation, edging, prodigious screaming orgasms, avian metaphors, dairy metaphors, Princess abuse by a minor.