Sonic is stolen from his home by tune dealer Bowler Hat Guy (Stephen J. Anderson), leaving Detective Pikachu (Ryan Reynolds) and the rest of the gang to try to rescue him. But when Sonic discovers that he's actually a valuable collectible from a once-popular television show called "Sonic's Roundup" and is reunited with his horse Spirit (Matt Damon), Sticks the Badger (Nika Futterman) and his faithful sidekick, Doctor Robotnik (Jim Carrey), he doesn't want to leave.