Get Amnesia

Intro
The "Get Amnesia" plot is where someone loses their memories, likely to a violent head-on collision, and either regress to a blank slate or act like a different person. Others might take advantage of a blank slate amnesiac and lie to them as they don't know better, and a new personality amnesiac could take on an attitude that those around them don't like, persuading them to fix the amnesiac's memory problem.