Wanted: Thorax

Thorax is a Changeling that has recently been accepted into pony society thanks to the efforts of Spike. However, when asked why he didn't come to Destiny instead of unintentionally causing panic, Thorax explains that he is actually wanted by the Villain League because of abandoning them. With the risk that, given that the Villain League might know he now lives in the Crystal Empire, Cadance calls the Shell Lodgers to protect Thorax. But a unicorn traitor in the ponies' midst, named Misty Gust, who has a pent-up prejudice against Changelings and tried multiple times to get rid of Thorax, turns him into the Villain League and frames Pred for the crime, using a jinx to negate lie senses. With Pred being put on trial, Spike is determined to prove Pred is innocent and offers that the Mane Seven and the Shell Lodgers go and rescue Thorax so he can confirm the culprit. However, they discover that rescuing Thorax won't be easy as none of the places the Villain League owns have Thorax. With time running out for a pony framed for a crime he didn't commit, how will our heroes acquit him in time?