Daughters of Satan

Tarnsai has the power of water, Plerngpit has the power of fire, Eurngsai has the power of earth/soil, and Wayuta has the power of wind. They found an old book in a cave when they were in the forest for a class fieldtrip. After they found it, they were in the process to learn how to use their powers. Pinky is an adoptive kid from a village. She is not aware that she is adopted because her parents didn't tell her. They were killed by the dark master. Grace is a tomboy and Nam and his group of friends had a bet on Grace that Nam would turn Grace into a girl. So Nam pretends to be good to Grace and she falls in love with him. At first Nam doesn't like the group of girls, so he tries every way to get them into trouble. Later, Nam fell in love with Pinky and Grace became jealous and she uses her powers in an evil way. Pinky became aware of that and pulled out. Slowly each member left the dark side leaving Grace by herself. Would Pinky be able to save her beloved friend?