I've decided to make a second story to take place after the events from "Conquer". Since the other sticks agreed to help Purple find out what his purpose is and find himself. This story will have a major conflict, and it may even send Purple farther from his goal.....But only time will pave the path...

Set after 'Mutagen Man Unleashed.' Determined to keep his promises to change Timothy and April's father human again, Donatello pushes himself beyond the point of exhaustion while working nonstop to create a retromutagen. It's up to Donnie's big brother, Leonardo, to stop the genius turtle from sacrificing himself and help him see his own self-worth.

Donnie finds himself in a confusing and terrifying situation after the group splits up and his solo mission goes wrong, no one can find him and he won't reply to anyone's messages. There are few clues about where he could've gone and where he went is up for speculation to family and friends. No one knows where he is except for Donnie himself, who was taken by scientists. They seem to mean well, but don't see him as a person. (TW: Major character death) credit to @Mr_Lambert for helping me with many ideas, including what the theme of the story should be, and working on a bit of the content directly.