Mainland Troubles

Months after the Deep Sink incident on Sodor. Almost all the electric engines on the mainland began to go haywire and rouge, having to get locked up in sheds while other engines took over work, mainly preserved none electrical engines. This leads to the Fat Controller and the diesels of Sodor going out and finding the source of this error in the systems with the help of old military friends and friends that hadn't been seen in a long time. Will they find out whats caused this rather bizarre mystery? Or are they chasing a headless chicken?