Bubby, a 35-year-old man, has spent his entire life imprisoned in a squalid apartment by his abusive and domineering mother. She has convinced him that the outside world is poisonous, manipulating him to remain completely dependent on her. Isolated and lacking any real understanding of society, Bubby's worldview is shaped by the traumatic and bizarre experiences he endures within the confines of his home. His only companions are a cat and a religious statue, and his primary source of information about the world comes from what he observes through a small window and limited interactions with his mother. This oppressive environment sets the stage for Bubby's eventual desire to escape and discover the truth for himself.

One day, after a series of increasingly dire circumstances, Bubby defies his mother's warnings and ventures outside. Unfamiliar with the norms and behaviors of society, he embarks on a surreal and chaotic journey through the streets, encountering a variety of people and situations that challenge and transform his understanding of the world. His experiences range from comic misunderstandings to profound revelations, all while he tries to make sense of the unfamiliar freedom he's gained. As he navigates this newfound independence, Bubby's encounters force him to confront his past, adapt to his present, and search for a place where he truly belongs.