Happy Ghost V

From a camping trip, a college girl took home an ancient rope to use to keep her torn backpack in place, not knowing it was used by a disgraced scholar to hang himself with decades before. The scholar's ghost resurrects at her school and befriended her and her two friends, and teaches them the importance of academic success, love, family and friendship.

A high school teacher constantly has pranks played on him by the students. He becomes a ghost with magical powers, but they keep getting him in trouble with his superiors.

A young, unsuccessful singer, after committing suicide, is to be reincarnated, this time into a musical family. Her spirit must get to the hospital where her future mother is currently ready to give birth to her, so that she can enter the womb and be born. Unfortunately, she misses her appointed birth time, twice, due to the accidental intervention of a young man, Mr. Hong. At first she is angry and makes life hard for him, but eventually they fall in love, although she can't stay around long as she has one last chance to be born.

A group of college kids discovers the remains of an evil warlord from an old cave and brings it to their dormitory, which ultimately awakens the warlord's ghost. It is seeking to avenge his killer, who has since reincarnated as Mr. Hong's snobby girlfriend Annie. With Hong and Annie endangered, Hong's reincarnated spirit takes over to save him and Annie, and defeat the demon.