The Sisters Sputnik are a time-traveling trio of storytellers-for-hire who are much in demand throughout the multiverse of 2,052 alternate worlds. Each world was created by the detonation of a nuclear bomb in Earth Standard Time, home of the Sisters' leader, aging comic book creator Debbie Reynolds Biondi, her 20-something apprentice Unicorn Girl, and their pop culture-loving AI, Cassandra. Tales of Earth Standard Time-That-Was, from World Wars to the space race to Hollywood celebrities, have turned the Sisters into storytelling rock stars.

In a distant reality where books and music have disappeared, Debbie finds herself in bed with an old Earth Standard Time lover who begs her to tell him a story. Over one long, eventful night, she spins the epic of the Sisters' adventures in alternate realities, starting with the theft of a book of evil comic strips in a post-pandemic Toronto full of ghost kitchens and robot-worshipping lost children known as junksters, to a disco-era purgatory where synthetic people are sending humans into the past through a reverse-engineered Statue of Liberty, to a version of the 1950s where the Sisters meet a rising star named Frank Sinatra and his girlfriend, the once-and-future Queen of England.