Nadia, Sera, Y/N and Theo enter a facility for a "study." Over months, staff slowly convince Nadia and Sera they're enemies, not sisters, while eroding Nadia's art skills into crippling insecurity and turning Sera cruel through reward-conditioning — physically aging Sera into a blind, balding old man and shifting Nadia into an insecure boy with hair so long he can barely walk. Theo's quiet certainty is contradicted until he loses trust in his own thoughts, and he's slowly reshaped — mentally and physically — into a loud, opinionated little girl with blonde pigtails. None of them remember the change happening.