The book is a profound exploration of identity and the human condition, revolving around a man who is arrested upon his return to his home country, Switzerland, after spending time in America. Although he insists he is not the man, Stiller, that everyone believes him to be, his protests are ignored. The story unfolds as he writes in his prison cell, reflecting on his past life and relationships, and grappling with the question of who he truly is. It's a thought-provoking narrative that challenges conventional notions of selfhood and personal identity.

The novel follows the adventures of an eccentric, violent, and mentally unstable protagonist who is released from an asylum by his psychiatrist. The pair embark on a chaotic journey across Europe and America, encountering a variety of strange and often dangerous situations. The narrative explores themes of insanity, violence, and the human condition, offering a dark and surreal critique of modern society.

In the play, the audience is taken on a surreal journey through the dreamlike experiences of the daughter of a god who descends to Earth to better understand human suffering. The narrative defies conventional time and space, weaving together a series of disjointed scenes that reflect the illogical and fluid nature of dreams. The characters she encounters are trapped in their own cycles of misery, their lives marked by frustration, disappointment, and the futility of their pursuits. The dreamer navigates this shifting landscape, attempting to find meaning and compassion within the chaos, ultimately revealing the universal struggles of the human condition.