Yeongsangpyeonji (2015)

Gu-Jin is being suspected of infidelity by her girlfriend. He was caught red-handed exiting his house with another girl. Plus their hair were both wet! Gu-Jin, claiming that this is all a misunderstanding, attempts to correct her suspicions. He sends her a video message packed with interviews, reenactments of the scene in question, and other evidence to counter her claim.