Felix Marr dies in a very stupid way, loses an argument with the celestial authorities, and is offered a path back to life on one condition: he must spend his probationary haunting assigned as guardian spirit to the single most accident-prone person on Earth.

That person is Agnes Wibble.

Agnes is kind, bright, and so alarmingly susceptible to freak mishap that fate appears to keep a special notebook for her. Felix's job is to stop pianos, ladders, coconuts, municipal buses, decorative swords, and one deeply vindictive escalator before they turn her into a statistical anecdote.

The series is a comic near-death procedural with:

• celestial betting pools
• preventable disasters in improbable quantities
• a guardian spirit learning that "subtle intervention" is an overrated policy
• a mortal who keeps assuming the universe is merely being dramatic again