As Steven helps Sadie cope with quitting her job at the Big Donut and losing Lars, Steven and the Gems must work together to deactivate and old Diamond Authority artifact called the Harmony Core before it destroys Earth.
| ISBN: | 9781787733503 |
| Publication date: | 29th November 2019 |
| Author: | S M Vidaurri, Rebecca Sugar, Meg Casey, Cartoon Network Television network |
| Illustrator: | Mollie Rose |
| Publisher: | Titan Comics |
| Format: | Paperback |
| Series: | Steven Universe |
| Genres: |
Graphic novel / Comic book / Manga: styles / traditions |