The Mafu Cage (1978)

Plot

In a decaying mansion, two eccentric sisters navigate their twisted lives with a pet ape, a remnant of their deceased father, confined to a cage. One sister clings to sanity, striving to maintain a semblance of normalcy, while the other descends into madness, exhibiting increasingly primal behavior. As their fragile dynamic unravels, the tension between them escalates, revealing dark secrets and the haunting legacy of their upbringing. The chilling atmosphere of their home mirrors their deteriorating relationship, raising questions about the bonds of family and the thin line between civilization and savagery.