The BLUE BLUR IS BACK from the events of "WORLDS UNITE" and ready to save the world! In "Cold Hearted," Sonic embarks on a quest through the arctic to find and recover the all-important Gaia Keys! Collecting them all is essential for fixing the shattered world. It's a pretty chill mission until Egg Boss Tundra steps in to put the freeze on Sonic's plans! Meanwhile, Dr. Eggman is "Back in Business" as he braves the unknown to find his most treasured killing machine Metal Sonic! Featuring cover art by newcomer Adam Bryce Thomas plus a "HERO" variant with art provided by SEGA!