Nezumi starts off as the girl who might as well be invisible. Quiet and shy beyond belief.

Until her life is turned inside-out when invited to join a high tech (secret) virtual reality role play.

Here 'Mouse' is given a chance for a different life, different and crazy friends and the added bonus of a extra person inside her head!(okay that part was an accident)

Zilli is an A.I (artifical intelligence) who accidently got pulled into Nezumi's body. She is bold, brash and quick tempered and of course, hates this new situation she is stuck in, but the two need to learn to live with each other in the real world and the virtual.

Of course, Reality still sucks