La saison 1 de The Parentage a été diffusée à partir du 3 janvier 2019.

Kom and her mother Kae, who has amnesia are supported by Kru Sompon. Kae faints on the day that Kru Sompon throws a party for his older brother. She meets Pit and remembers everything. Kae entrusts Kom in his hands before she dies. Once they are done with her funeral Pit takes Kom to Bangkok and entrusts her with a friend named Rangsan to take care of her. In truth Rangsan and his wife Bunga don’t like Kom and treat her as a servant. Once Pit goes out of the country, he sends a younger relative named Chartsiam to take care of Kom if anything were to ever happen to him. Chartsiam gives a doll to Kom and this leaves a great impression on her. Pit dies and leaves a will for Kom, once Chartsiam returns he takes care of Kom from afar, but refuses to tell her about Pit. Eventually, love blossoms between Chartsiam and Kom. But the love that appears to be forbidden for the two, how will it end up?