1st book in the Odd Squad V.S. trilogy. When a dangerous mission goes terribly wrong, Agent Olympia loses her memory. When Doctor O. gives Olympia a bottle of medicine, the prescription doesn't work as planned.. at all. Agent Olympia thinks she is a villain who is in charge of all "odd villain" communications. When agents use her communication information, they are able to solve cases like never before. But villains soon find out that the medicine gives Agent Olympia (Odd Odysseus) such abilities, and hide Olympia where no one would ever find her. It's up to Otis, Ms. O, Oona and Obfusco to save Olympia before it's too late!!