Orphaned sisters Ai Mai and Mii share mysterious powers and live in a magical mansion that can transport them to different dimensions. As they constantly journey to and explore new territories they must conceal their identities from people they meet and try to fit in wherever possible. This lifestyle of constant change has left them with few meaningful connections to other people. Being the attractive young women that they are potential boyfriends constantly vie for their affections but their transient lifestyle has left them unable to form lasting bonds. This is a sexy (the girls are fond of taking baths) and yet oddly melancholic Anim? of three sisters who seek the meaning of life and find adventure along the way.