Project Hail Mary starts with a familiar Weir scenario: one person facing an impossible challenge. Ryland Grace, a middle-school science teacher with a PhD in molecular biology, wakes up alone on a spaceship far from Earth. He doesn’t remember how he got there, his crewmates have died, and now he’s responsible for saving humanity. The sun is losing energy because of a microorganism called Astrophage, and Grace’s job is to find a solution at Tau Ceti, the only nearby star not affected.