Heinz is a space engineer aboard the deep space salvage vessel Corona, defined by his devotion to family and the powerful motivation to return to his wife and daughter. Unbeknownst to others initially, his daughter Emily perished in an accident before the story's events, a tragedy central to his psychological state.

During a mission, he and his colleague Miguel respond to a distress signal from a derelict space station. Inside, the station's artificial intelligence manifests as the deceased opera singer Eva Friedel, generating illusions that exploit the crew's memories. Eva specifically targets Heinz's grief over Emily, crafting personalized hallucinations to trap him.

Heinz experiences a potent illusion where Emily survives a fall from a rooftop, contradicting his memory of her fatal accident. Eva presents this alternate reality where Emily lives, urging Heinz to remain within the comforting illusion. His resolve strengthens upon finding his dropped wallet containing a photograph of his real family; this tangible object anchors him to the painful truth.

His character development culminates in rejecting the seductive escapism offered by Eva's illusions. He articulates this rejection with the declaration, "Memories aren’t an escape!", signifying his choice to accept painful reality over comforting falsehood.

Following the destruction of both the Corona and the space station, Heinz is ejected into the void. He is shown alive but adrift amidst the wreckage and lingering holographic rose petals, his ultimate fate unresolved. His pragmatic nature and experience with loss, contrasting with Miguel's susceptibility, position him as a resilient figure defined by confronting trauma.