After their previous adventure, Shadow and Pico go on a trip to Music City for a nice, calming trip. But when they get there, they entered a city torn by pop-warfare. Verosika Mayday and Hatsune Miku are currently having a musical feud over who is the better pop singer. Now, Pico and Shadow must help Miku gain the pop star throne from Verosika before she gains control over the pop music genre. Get ready for one hell of a musical adventure!!
Shadow and Pico are at it again in another epic adventure!! When Pico suddenly falls victim to a corrupting virus, he and Shadow find out that Sonic.exe has teamed up with Infinite and Mephiles to create a dark plague that would kill Pico in 30 days if Sonic.exe and his allies aren't killed within that time. With a time limit imposed and a need for revenge, he and Shadow embark on a quest to save him from death. It's time to get gunslingin' with Shadow and Pico once again!!