'Samurai Nan: Origins'
Samurai Nan: Origins
Non-linear, multi-plane, multi-frame, stop-motion animation.
The 411: A rogue grandma happens upon a corpse in a forest (in a body bag). Paranoid that the nearby campers will see her with it and think that she killed the person, she leaves with the body and ends up running from the police. Akin to when you leave a store that has a security guard, nervous that you'll get "caught", even when you haven't done anything wrong.
A rotoscoped low-angle version: