: Feeling guilty about her actions and their impact on her family, Jeong-ae eventually decides to take a solo trip to Jeju Island to distance herself from the situation.

The moon will rise again tonight. And if you are lucky, she will open up. Will you be ready to listen?

To truly appreciate the "mother in law who opens up when the moon rises," we must first understand the circadian and emotional shifts that occur after sunset. There are three primary reasons this phenomenon is not only real but increasingly common.