Surrounded By Us

Four planetary workers go to space where they perform their annual check on a main central space station. What is usually a routine maintenance run turns into a nightmare. With no other person in sight, they board the main station.

Upon entering, they notice something strange about one of their coworkers. A virus has changed the worker, setting off a chase that ends in murder. A while later, the coworker returns to normal. Seconds later, the captain changes, and continues the murderous rampage.

 The four coworkers then continue in what seems like an endless loop. Constantly killing each other only to wake up and repeat the process again.