Hidden Agenda tells the story of a person who is secretly in love with someone who has a hidden agenda. Before birth, it was a love that had to be betrayed by the heart.Zo, a third- year political science student in international relations, has a dream is to study abroad by winning a scholarship from a debate competition. He was scorned by close friends like Pat and Kat that he could not do it because he couldn't even confess his love to someone who has secretly liked for 3 years, Nita.

Zo still isn't brave enough, so a plan was born to flirt with Nita.  Zo was recommended to ask Joke,who was Nita's ex-boyfriend . However, there is an exchange that Zo may need to make for Joke's help. The flirting operation with a hidden secret plan begins!