A fictional WW2 AU fic. Yoshi, Leo, Raph are going to fight in the war against Oroku Saki while Donnie stays behind to finish his schooling to become a doctor and to watch a 10-year-old Mikey.
This an alternate ending the the episode MOUSER Attack. What if Mikey and Donnie got captured by Shredder instead of being saved by Leo and Raph?