Third-grade scientist and inventor Ada Lace has a brand-new mystery to solve in her very own neighborhood. Something terrible has happened right next door, and a beloved pet Yorkie has been completely dognapped without a trace. Ada is ready to jump into action, but she is not going to investigate alone. She teams up with her quirky neighbor Nina, who is absolutely convinced that the dog was abducted by a visiting alien spaceship. Even though they have very different theories about the missing pup, Ada brings out her impressive collection of homemade gadgets and high-tech tools to start tracking down the culprit. As the clues pile up and the case becomes even stranger, the two girls learn how to combine their unique skills. You will love following along as Ada and Nina navigate false leads, test out scientific inventions, and discover that opposites can make the perfect investigative team when a furry friend is counting on them.