"Hey, have you heard of 'Patrol Man'?"

After 8 PM, if you're walking while using your smartphone, a voice will warn you from behind, saying, "Using your phone while walking is dangerous." But, strangely enough, when you turn around, there's no one there.

The urban legend known as 'Patrol Man' says that if you ignore the warning and continue to look at your phone, someone will push you from behind at a crosswalk when the light is red.

It was believed to be just another urban legend, but an unending string of inexplicable incidents begins to plague those who have heard the story...

This is the story of how a new urban legend is born.