In the bustling New York City of the 1980s, a man named Duane Bradley arrives carrying a mysterious and strange box. What appears to be just an unusual piece of luggage is, in fact, the home of his conjoined brother, Belial, who is filled with rage and a thirst for revenge. Duane, a young and vulnerable-looking boy, seeks his place in a world that seems indifferent to his well-being as he attempts to lead a normal life in a hostile environment.
As he delves into the urban landscape, Duane realizes that his brother, hidden in the box, feels threatened by the past they both share and the suffering they endured at the hands of their own family. In an effort to separate himself from the shadow of his brother, Duane begins to connect with a charming young woman named Casey. However, coexisting with Belial proves complicated, as his violent and possessive nature erupts the moment he feels his brother is being taken away from him.
The constant struggle between the sense of belonging and the desire for independence leads Duane down a fatal path, while his relationship with Casey is imminently threatened by the monstrous creature dwelling in the box. With unexpected twists and a dose of dark humor, the story explores twisted family ties, loneliness, and how sometimes escaping the past can result in unimaginable terror.