When Isabelle died, she didn't stay dead.

After her death, she found herself in a strange city called the 'Market,' a city in the Multiverse that once allowed certain souls to retain their memories and permanently increase their abilities between lives. Once, the Market housed a community of Transmigrators that spanned the entire multiverse, occupying the top seat of power among those who could travel between dimensions.

At least, that's how it worked before the inhabitants were slaughtered and the Market was razed to the ground. Now, the Market is a wasteland of spells, technology, and liches. In order to survive in a multiverse filled with magic and interdimensional travelers, Miria and her friends need to make use of the tools left by the old Market, find the other factions who travel between dimensions, and explore the myriad worlds if they don't wish to meet the same fate.