After a bad experience at Meh Burger, Amy decides to open her own restaurant, starting a rivalry with Dave the Intern.
A super cool shrew comes to town and threatens Sonic's status as the town's biggest hero.
After seeing a cross-eyed moose, Sticks is convinced that the gang is cursed. They set out to get help from a mystical marmoset.
When Knuckles sets out on a quest to find the perfect ingredients to win the village's annual Chili Dog Cook-Off, he find much more.
When Amy realizes that her friend is a pack rat, she forces Sticks to have a garage sale. During the sale, a secret door is unlocked.
When Knuckles is made mayor for the day, he sends the village spiraling into chaos.
Dr. Eggman is making a movie about his life. Is this an attempt at artistic expression or a diversion for a secret evil plan?
Sonic refuses to let Mike, an average guy, watch him battle Dr. Eggman, causing the village to turn against him for being insensitive.
A second Knuckles from an alternate dimension causes trouble for Sonic and his friends in this dimension.
Orbot and Cubot discover rejected Cubot prototypes hiding in the jungle. They need Sonic's help to protect the robots from Dr. Eggman.
All Dave the Intern's attempts at villainy fail, until he inadvertently captures Dr. Eggman and hijacks his robots.
At the village's New Year's Eve party, Dr. Eggman slows down time in a last-ditch effort to defeat Sonic just once before year's end.
To prove Amy and Sticks are being brainwashed by their pop icon heartthrob, the guys go undercover by forming their own boy band.
- Sonic Boom: Mayor Knuckles was first announced in a DVD advertisement that came with Sonic Boom: Hedgehog Day.
- Sonic Boom: Mayor Knuckles was released on iTunes in the UK on the same day.
- This is the first Sonic DVD to be given a PG rating in the UK.
- On the back cover, "Eggman the Auteur" was titled "Eggman the Amateur" and "Battle of the Boy Bands" was titled "Battle of the Bands".