Wayu (Jes Jespipat), a first-hand assassin, has an introverted personality. He does not like associating with anyone. Wayu works with other gunman, with Surasee (Captain Puthanate) as their boss. Surasee opened a pub as a front and have Wayu as the bartender. One day Wayu met with Pavarin (Mo Monchanok), a sculptor who just recently graduated from America. She is also the daughter of Thanatat (Willie McIntosh), a frozen food business owner, in which behind closed doors does drug trafficking. Often times, Wayu and Pavarin would meet at the park and eventually the two grew fond of one another.
One day Surasee was hired by Thanatat to go kill Thanatat's business rival due to conflicting interests. Instead, Surasee gave the job to Wayu to handle. On the day of the incident, though Wayu accomplished the mission, Pavarin who was in the area also got injured. Sarut (Ak Akarat), a young officer who is also Pavarin's friend and secret admirer stepped in to work on the case.
Due to conflicting issues with Thanatat's drug business, his rivals aim their target to Pavarin, but luckily Wayu comes in and saves her. This causes their friendship to grow deeper and eventually turn into love. When Thanatat found out that his daughter is dating an assassin, he ordered someone to kill Wayu. But Surasee found out and threatened Thanatat that if he does anything to Wayu, he will do the same to Pavarin. This made Thanatat back out.
Marisa (Woonsen Virithipa) a singer at a pub who is in love with Wayu got kidnapped by Thanatat's men after accidentally overhearing their conversation. But eventually Marisa escape with the help of Komsorn (Pym Pympan), a new drug dealer from the North, also Thanatat's rival. When Thanatat found out about this, he hired Wayu to kill Komsorn, hoping he would kill two birds with one stone, that is get rid of his enemies and also let Pavarin know that the guy she's in love with is an assassin. This plan of Thanatat was successful.
When Pavarin found out that Wayu is an assassin, she tries breaking up with him immediately, causing Wayu to be very sorry and thought of quitting his job as an assassin. When Sarut found out of Thanatat's drug trade, he aimed for an arrest but Thanatat offered him a deal to get engage to Pavarin and throw the fault to Surasee. Sarut accepted the offer. Surasee was furious that Thanatat back-stabbed him so he told his people to go bombing at Pavarin & Sarut's engagement. Wayu found out and rushed over to save Pavarin and the two ran away together. Wayu and Pavarin hope to start their life together overseas. Sarut put out a warrant for both Wayu and Surasee. How will Wayu and Pavarin's love story end? Who will come out as the winner in this chase? Find out the answer in "Cheewit Puer Kah Huajai Puer Tur" airing March 27, 2017.