We are not alone. Our universe is made up of a countless number of what we call Earth. These "earths" are created when people let their imaginations go wild. For example,if a young girl thinks of herself as a Barbie doll,an "earth" filled with Barbie dolls will be created, everyone on the earth we are living on would be represented in that "earth" by Barbie dolls. What will happen when Im YoonA and Kwon Yuri find out about this phenomenon and travel through worlds? Read on!