Opal Moonbaby and the Out of this World Adventure

Opal Moonbaby is an alien. She reads minds, has a special brain dictionary, and a pet who is a mix of six different animals. She's also Martha's best friend.

Opal makes every day feel like an adventure, but taking her to school could be Martha's biggest adventure yet!

Previously published as About Zooming Time, Opal Moonbaby!