“Safety Not Guaranteed” is a 2012 indie starring Aubrey Plaza as Darius Britt, a low-key young woman who “expects the worst and tries not to get her hopes up”.
Darius is working as an intern for a local magazine when she gets sent to assist on a humorous piece about a classified ad.
“Wanted: Somebody to go back in time with me. This is not a joke. You’ll get paid after we get back. Must bring your own weapons. I have only done this once before. Safety not guaranteed.”
Of course, what they find is not what they expect, and everyone involved winds up questioning the way they saw things at the start.