(RUSHED, BAD) Sodor: Rise of Infected

(WARNING: This Story is Rushed, Cringy and Outdated. I heavily recommend reading Liam's remaster of this AU!) (Story inspired by Sodor: Left for dead by Shanks) Douglas, is the Scottish NR10 tender engine. Something strange happened one day. Humans and Engines were getting sick from a weird infection that was roaming...