Mac and Riley head overseas together to prevent a governmental collapse and inadvertently inhale new deadly microscopic technology.

Mac, Desi and Russ go undercover during a royal Indian wedding to protect a princess whose policies could put her life in danger. Also, Russ and Sophia come face-to-face at the wedding, Bozer suspects Riley is up to her old hacking ways and Matty runs down a lead in hopes of getting to the bottom of Mac and Riley’s ingested nano-trackers,

Mac and Desi travel with Bozer to his childhood home when his aunt dies in a tragic accident, however, they soon discover she may have been murdered for trying to expose the city’s contaminated water supply. Also, Riley, Matty and Russ continue to follow leads on their nano-trackers investigation.

When Mac and Riley go missing and wake up 24 hours later in a corn field with no memory of how they got there, they must unravel the mystery to find who took them, and how to get rid of the nanotrackers in their bodies, no matter the cost.