Lost in a thick fog on their way to Nimbasa City, Ash and his friends come across a wandering Audino who appears to be in a trance. Suddenly, they are stopped by Officer Jenny and two young detectives, Christie and Doyle, who accuse them of having something to do with the recent disappearance of several Audino. A background check reveals their innocence, and when Officer Jenny tells our heroes what’s been happening, they offer to help.
Splitting up into three groups, they vow to find the missing Audino and keep an eye on the town’s remaining Audino, with the help of some high-tech tracking devices. But just as they begin the operation, the remaining Audino start moving, and everyone takes off after them!
When the tracking signal gets jammed, Cilan speculates that someone might be controlling the wandering Audino and causing the tracking signals to fail by using high-frequency sound waves. With its excellent hearing, Ash’s Roggenrola leads the investigators to an abandoned wind farm, where they discover Team Rocket behind it all. Jessie, James, and Meowth have been luring the Audino, intending to use them as part of Doctor Zager’s powerful new radar device!
A fierce battle ensues and Team Rocket’s sound-wave machine is destroyed, freeing the captured Audino. However, when Officer Jenny attempts to arrest the villainous trio, they escape once again. Fortunately the Audino are now free and safe, and our heroes can once again resume their journey to Nimbasa City!