Dr. Eggman's new capital city is expanding and only Sonic and his friends can stop it! On a recon mission with the new Diamond Cutters—Tangle, Whisper, and Lanolin—Sonic discovers that the Eggperial City is harnessing the resources around it to grow ever larger. The Diamond Cutters are still getting the hang of working together which leads to trouble when they get trapped. Alone against an army of badniks and a self-replicating city, Sonic calls for back-up and gets more than he bargained Tails, Amy, Blaze, and Silver all answer the call, but Shadow, Rouge, and Omega arrive for their own reasons too! While the Diamond Cutters have to have an emotional break-through to escape, Sonic and Tails coordinate a horde of heroes to try to bring the city down! Collects Sonic the Hedgehog issues #57–61.

While the villains are away, the heroes will play! Sonic and his pals go off on their own adventures, even as all roads lead them back to one another. With Dr. Eggman and Surge subdued for now, Sonic and friends have a chance to relax, reset, and plan for the future. Or so they hope. If anything can be counted on around Sonic, it’s that new misadventures are just waiting to happen! To start, Amy visits Knuckles on Angel Island to return a relic. The island, as always, has a few surprises in store for them as they catch up. Meanwhile, Mimic is putting together the purrfect disguise to infiltrate the Restoration, and Silver is left to his own devices at Restoration HQ. Sonic himself has joined Blaze on a trip around the world where they will see all the sights to be seen! Collecting IDW’s Sonic the Hedgehog #62–66.

The action-packed saga continues as Sonic and crew zip around in search of fun, but find trouble instead! But don’t worry. No bad guy can keep Sonic from a good time. Sonic can’t catch a break! Every time he tries to relax, some other danger shows up! A relaxing day at the beach? Not if the Babylon Rogues have anything to say about it! Chilling with his best buddy, Tails? Whether it’s a Chaos Emerald trapped in a mysterious cave or the return of the Warp Topaz, something’s going to get in his way! Good thing Sonic has lots of friends to help when he needs it: Amy, Jewel, the Diamond Cutters, and of course, the Restoration’s newest heroes, Surge and Kit! Collects Sonic the Hedgehog issues #67–68, Sonic the Hedgehog’s 900th Adventure, the IDW Endless Summer one-shot, and the Halloween Special one-shot.

The action-packed saga continues as Sonic and the gang take on the Extreme Gear races and encounter a mysterious contender: the Phantom Rider. On your marks! Get set! RACE! Welcome, Extreme Gear fans, to the qualifier for the Clean Sweepstakes race around the world, sponsored by the Restoration and Clean Sweep Inc.! And look at the starting line! It’s Sonic, Tails, Amy, Surge, Kit, the Diamond Cutters, and the Babylon Rogues! Hold on to your tails because we’re in for one heck of a race! But there’s drama on the track! As Tails and Amy go to investigate a mystery of their own, only Sonic is left to answer the question, who is the Phantom Rider?! Then in two one-shots Sonic and pals are getting into the vacation spirit. The Winter special brings holiday fun, food, and plenty of snow! But when Dr. Eggman's robots start making trouble, the gang find themselves in a real Winter Jam! But soon after Spring has sprung! The flowers are in bloom, and so is trouble! When Sonic, Tails, and friends try to take some downtime, they run into a mystery that’s spring broken! A seasonal whodunit in the Sonic style! Collects Sonic the Hedgehog issues #69-71, Spring Broken, and Sonic’s Winter Jam one-shot.

The Deadly Six are back for revenge and their first target are Sonic's friends in the Restoration! Zavok, leader of the Deadly Six, is angrier than ever and wants to reunite his minions. Jewel has called on Sonic, Tails, and the Chaotix for help, but will they be able to stop the Zeti before they launch an all-out assault on Restoration HQ? Plus, Belle's got her own intruder to deal with, but it turns out they're here to steal her! Sonic's going to have to move quickly to stop all the mayhem. Ian Flynn returns to writing duties with artists Adam Bryce Thomas, Tracy Yardley, Jamal Peppers, Bracardi Curry, and Thomas Rothlisberger. Collects issues #41–44 of the Sonic The Hedgehog series.

A powerful new foe has set his sights on Angel Island, and Sonic and his friends must defend it at all costs! When Neo Metal Sonic—an evil robot with Sonic's speed, Dr. Eggman's intellect, and an unbreakable mechanical body—conquers the island to grow his power even more, Sonic and his friends must team-up and take the fight to him. But even with the full power of the Resistance behind him, will Sonic be able to take down Neo Metal Sonic once and for all? Collects Sonic the Hedgehog issues #9-12.

Can Sonic save a city in crisis... or has he finally met his match? Dr. Eggman has launched his most extreme plan yet and Sonic's already racing to catch up! As Eggman drowns entire cities in his Metal Virus, creating hoards of Zombots—civilians infected with the virus to become easily manipulated machines—Sonic himself struggles to keep his infection in check! And when Sonic's friends start falling victim, it's clear no one is safe! Collects issues #17-20 of the Sonic The Hedgehog series.

Can Sonic outrun a disease that turns everyone into robotic zombies? The world has fallen to the Metal Virus, a manufactured plague that transforms all it infects into robotic zombies at Dr. Eggman's command. Even Sonic the Hedgehog has been infected, though his speed has allowed him to keep the virus at bay. Now, with the population more infected than not and the virus constantly spreading, Sonic and his friends in the Restoration launch a desperate plan to cure the world: Tails will synthesize an antidote, Amy will coordinate rescue operations, and Sonic will provide valuable data on how to combat the disease... but when things go awry, it all comes down to the last minute! Collects issues #21-24 of the ongoing Sonic The Hedgehog series.

Fan-favorite artist Evan Stanley takes over as writer! A new storyline begins, perfect for new readers, as Sonic races to help a friend in need! Hold on to your chili dogs, Sonic fans! The Metal Virus is gone, but things aren't back to normal. Omega is damaged, and his allies turn to Sonic for help. The only way to rebuild him is to trade parts with a mysterious champion Chao racer, so it's off to the races for Cream, Cheese, Amy, and Rouge! They'll have to keep up their winning streak or surrender Cheese to Clutch's evil... clutches! Meanwhile, Sonic and Tails are being watched by a mysterious figure in Dr. Eggman's seemingly abandoned base, but when Rouge's team calls for help, will this shadowy character prove friend or foe? Please keep your arms and legs inside the ride at all times, folks, this is going to be a bumpy one! Collects IDW's Sonic the Hedgehog issues #33–36.

When Dr. Eggman unleashes his latest attack, Sonic and Tails will have to rely on their friends to help them foil his latest dastardly plan! There's a new kid on the block! And a new... tower? While Tangle tries to initiate the new recruit, Belle, into the Restoration, Sonic, Tails, and Amy investigate a mysterious structure that has popped up. Turns out, it's a maze of twisting corridors and crazy challenges! Can they pass this test with flying colors? Fan-favorite writer/artist Evan Stanley continues her epic Sonic run in this adventure also featuring artists Adam Bryce Thomas and Bracardi Curry. Collects IDW's Sonic the Hedgehog issues #37-40.