As Zia (Shea Whigham) navigates the bleak expanses of his afterlife, he finds himself ensnared in a desolate realm, one devoid of even the most feeble glimmer of hope. The atmosphere is drab and colorless, lacking stars or warmth, with a heavy pallor of collective sorrow permeating the air. This strange purgatory houses souls who met their end through self-infliction, including Eugene (Patrick Fugit), a Russian musician whose entire family fell victim to suicide, rendering this limbo a population of misfits languishing in dingy bars.
Zia's revelation, courtesy of Brian, that his ex-girlfriend, Desiree, had taken her own life shortly after his demise, ignites a profound grief and a sense of responsibility within him. Motivated by these emotions, Zia embarks on a quest alongside Eugene to find her.
Their odyssey leads them along a barren landscape, where they encounter a hitchhiker named Mikal, played by an unknown actor who asserts that her arrival was a mistake and that she is in search of a mysterious group referred to only as the "people in charge" or the PIC. As their travels unfold along the desolate highway, they confront a series of bewildering events, including Mikal's inexplicable ability to repair Eugene's broken headlights, and a chance meeting with Kneller (Tom Waits), an eccentric commune leader who dozed off while searching for his lost dog.
Their stay at Kneller's camp unveils that minor miracles can occur, yet only under conditions of apathy from the campers involved. Zia grows increasingly entranced by these small wonders, lamenting his own inability to manifest similar feats. Meanwhile, Mikal shares her own backstory of accidental overdose, while Eugene finds himself smitten with a vibrant young woman named Nanuk, played by another unknown actor. As plans to leave Kneller's camp solidify, a mysterious figure emerges from the woods with news: Kneller's dog has been abducted by the enigmatic cult leader known as the Messiah King, who is determined to reclaim his canine companion.
This catalyzes Zia, Mikal, Kneller, and another companion, Yan, to set off in search of King and the missing dog, embarking on a journey that will challenge their bonds, their perceptions of one another, and the very essence of their afterlife.
As the night envelops them, Zia and Mikal drift into isolation, their path obscured by a darkness that prompts them to seek solace on an isolated ocean shore. There, beneath the vast sky scattered with stars, they share an intimate moment of connection. Alas, their peaceful reprieve is abruptly interrupted with the dawn's harsh light as Kneller stumbles upon them amidst a disarray of used condoms and hypodermic needles—a grim reflection of the surrounding squalor.
Their expedition brings them to King's camp, where they witness the charismatic leader preparing for a so-called "true" miracle—a ritualized act of self-transcendence intended to liberate his spirit from the constraints of mortality. In a tense confrontation, Kneller confronts King over his intentions, while Zia uncovers a harrowing truth: Desiree, once a devoted follower, had succumbed to despair, taking her own life in the pursuit of King's promises of transcendence.
As King prepares to undergo a dramatic act of public self-immolation, Kneller unveils his true identity as an undercover agent assigned to dismantle King's cult. Authorities swarm the scene, arresting both King and Desiree, while Mikal chooses to remain with them, providing Zia with a measure of assurance that she will return. When Mikal fails to return promptly, Zia is left in a state of anxious waiting until Eugene and Nanuk arrives, bringing news that Kneller's camp has been disbanded and miraculously, Mikal has been revived. United, they board a train, with Eugene graciously gifting Zia his car, symbolizing their newfound liberation.
Zia, finally achieving a long-desired miracle—kindling a star in the night sky using merely a lit match, reminiscent of Mikal’s earlier feat—opts to embrace a journey of self-discovery. In a moment of carelessness, his cassette tape slips from his grasp and tumbles into the abyss beneath the passenger seat.
Meanwhile, within a vast warehouse brimming with labyrinthine corridors, Kneller retrieves Zia's file, securing it in his breast pocket as he converses about the advantages of knowing influential individuals. Zia, waking up in a hospital bed, is welcomed by the familiar figures of his parents who are engaged in discussion with doctors. Upon shifting his gaze to the figure beside him, he is met with an astonishing view—Mikal, alive and well, offers him a warm smile that signifies hope amidst the chaos.
