Steven Quartz Universe was discovered by the Diamonds. Wanting to punish Rose Quartz, but seeing no satisfaction in shattering her immediately, they took Steven's gem, and trapped him inside one of Blue Diamond's mirrors. There, he stayed for thousands of years, answering to none other than the Diamonds and their requests.

While Lapis Lazuli was of high stature, she hated Homeworld and the Diamond Authority. In a Crystal Gem raid, she sees her chance to finally escape. While the gems search for their friend, she is told as a test of loyalty to find something precious to her Diamond, Blue Diamond, and bring it with them to Earth.

Lapis remembers a mirror that the Diamonds used to gather, contain, and relay information. Everything it has ever seen can be shown. She takes the mirror and attempts to flee to Earth with the Crystal Gems.

The Crystal Gems have given up on their friend, and have decided to destroy the last Warp Pad connected to Homeworld that they had been using. But on the way out, Lapis is separated from the Gems, and now she must find a way to Earth from a planet against her with nothing but fear, determination, and a broken mirror.