Yume goes to buy the new issue of a comic magazine but finds it has sold out. She then sees her classmate and aspiring comic artist Hana with a copy.
The story begins when a middle school girl named Yume sees something fall from the sky, and meets a pale violet-colored kitten named Mew. It turns out that Mew has the power of "Yume Synchro" (Dream Synchro), the power to enter dreams. In the dream world, the girl and Mew collect Dream Stones. (Source: ANN)