READ WHEN TWO WORLDS COLLIDE BEFORE READING THIS STORY! Many changes have come to Earthni since Astroida and her malicious attack. Now, there's a lot of rebuilding to do, along with many secrets and mysteries about Mewni's royal past needing to be uncovered. Could there be some discoveries that Star and Marco never would've guessed about?....and may there be consequences for finding them out?

Earth and Mewni have now merged into one; all because of a rebel mewman princess and human safe-kid's love for one another (and magic, of course)! Now that they live in...well, sort of a brand new world, Star and Marco have many new adventures in store! However, one question remains. Are they ready for what is coming their way?