Ellen, a seven-year-old girl plagued by a lifelong illness, longs to experience the joys of outdoor play like any other child. Tragically abandoned by her parents, she finds solace in a peculiar cat's offer: a chance to live free from sickness in exchange for embracing witchcraft. In her enchanted new abode, she revels in newfound health, yet a cruel curse confines her indoors—stepping outside means a swift return to her ailing state. Determined to break free, Ellen strikes a dark pact with the cat to learn a spell that demands a sinister toll: feeding him souls for her complete healing. As her innocent desire for a healthy life spirals into a grim reality of sacrifice and loss, Ellen grapples with the harrowing consequences of her quest.