Here's a summary for one of my favorite boran lakorns:
The story starts off with Pra Sao, a deity/angel who meets a pretty ginaree (a half angel half bird girl) and asks her to be his wife. She agrees and asks him to give her something that will make her young and pretty forever and three years more with her family. He agrees and disguises himself as a common angel in the Great Tep's garden where he plants a flower that he hopes will please the Great Tep's wife and so she would give him the magical necklace she wears which he would give to his fiancee. The flower takes three years to grow and bloom. During his stay, he becomes friends with a playful teptida (girl angel) called Upsonsawun and they fall in love with each other but they don't realize it. In a plan to prevent Pra Sao's marriage, Upson. causes Pra Sao to curse his fiancee and her kingdom and when he finds out about the plan, he gets angry at Upson but they make up and realize their love for each other. Just as they are about to get married, Upson get's mortally injured and dies. She is reborn in the modern times but the karma she'd done in her previous life follows her and causes her to travel to the dimension of her previous life so that she can lift the curse on the ginnaree kingdom and make up for her wrongs.
She has to find the sacred waters of the three worlds, not an easy task and disguises herself as a male pram (a Brahmin that wears white, etc). Pra Sao, who has brought her to this dimsension in order for her to right her wrongs, looks after her from afar but he has a love rival in the reincarnation of Pra Angkan, another deity who fell in love with Upsonsawun. Eventually, the characters are able to get the three sacred waters and lift the curse but she then has to decide whether she wants to go home, go to Pra Sao or go to Pra Angkan, both of who she has feelings for.