Troubled by the fanaticism of the frenzied crowd at his concert, rock star Pink invites a fan to climb onto the stage and then spits in his face.

Devastated by his own actions, Pink collapses onto the stage. He is transported to a clinic where he begins the journey of witnessing the grand spectacle of his life. He relives his birth and pivotal moments in his childhood, as his father joins the war, leaving his wife and infant son behind, only to die at the front. He grows up with his overprotective mother and is mistreated at school by a tyrannical teacher who is in the service of a world that monitors its citizens and tries to control their thoughts. An initial revolt is quickly snuffed out.

At the end of his teen years, Pink marries a beautiful, free, and provocative woman, and is finally released from his mother's grip. Now a rich and famous rock star, Pink is inspired by his wife to isolate himself and compose a work that lashes out at the power of money. His wife takes to the streets to protest the financial world. Soon, a wedge is driven between Pink and his wife. While on tour, Pink gets high with the groupies who hang around him and obsesses over his wife's passionate antics with her lover. The rock star goes through moments of inner rage and depression, and is witness to the loss of his loves, rejecting all those with whom he could have some form of relationship. All his wounds and traumas have formed like bricks around him to create the wall that now isolates him from humanity. Pink is alone and bids the world goodbye.

Still isolated, Pink attempts to reconnect with the world; the ghosts of those he loved visit him, but nothing goes right. In a moment of great despair, as he tries to console the orphan he has always been, Pink begins to dream of his father's return and of the end of all wars. But it's all just a pipe dream, and Pink is in free fall.

Pink settles into a state of comfortable alienation. A rock star at the peak of his power, he has built a wall between himself and the rest of the world. Flirting with madness, he continues his delusional descent by transforming himself into a fanatical leader who lectures his followers and promises to get rid of all those who threaten his existence, who live on the other side of the Wall, and who attempt to escape. Pink and his men hunt down theses migrants and refugees seeking freedom. At the height of his alienation, Pink imprisons himself in a totalitarian hell where he is made to commit the worst atrocities. Suffering more than ever, Pink wants the nightmare to end.

The clinic in which he has taken his long journey through the night becomes a courtroom. At the end of his deranged hallucinogenic trial, during which the characters in his universe are called as witnesses, the judge sentences Pink to break out of his isolation and return to the world.