SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
Final Frequency Plot Summary and Synopsis
A student and her co-worker tell her Professor that they have discovered unusual seismic patterns that could collapse downtown LA during the G-20 World Leaders Summit. The professor learns that his financier was killed just after defunding A shadowy Nikola Tesla research project. Determined to find Tesla’s notes, Esther visits the professor’s home and office to find him gone and sets out on a quest to uncover the truth.
Source: Wikipedia (CC BY-SA 3.0).