Tine is a very handsome student and cheerleader in college, while Sarawat is one of the campus’ most popular guys and is also in the soccer and music club. When Tine is chased by Green, who he does not reciprocate feelings for — he ends up begging Sarawat to fake date with him in order to chase Green away. Somehow, just like the tale as old as time goes — pretend somehow starts to turn into reality. However, before a "happily ever after" there is the process of falling in love, and the slow realisation that somehow they aren't pretending anymore. Somehow, they do not want to.

Tine decides to join the music club to get close to Sarawat, but when the university board limits the maximum number of students in the club Dim has no choice but to hold auditions. Tine sets out to learn to play to the guitar in a week to secure his future in the club.

As Green shows no signs of backing off, Tine pushes Sarawat to be more public with his flirting to help repel Green's advances.

Sarawat's brother, Phukong, comes for a visit to learn about the university. Meanwhile, Mil, Dim, and Sarawat prepare for their performances at the concert.

Sarawat demands that Tine stop pursuing anyone else, including Pearl. Tine is progressively confused by Sarawat based on his understanding that they are not in a real relationship.

After Sarawat gives some clues about his true feelings for Tine, Tine devises a plan to test Sarawat's true feelings. The pair attend the Scrubb concert together.

Green's ex-boyfriend's arrival calls into question the need for Tine and Sarawat to continue their fake romance. Sarawat reveals the truth about the Scrubb concert meeting one year previously.

Man orchestrates a bargain that if Sarawat wins the soccer game versus Engineering, Tine will confess his feelings. However, if Sarawat loses the game he must agree to stop pursuing Tine.

The soccer game between Political Science and Architecture gets physical. Multiple injuries creates a burden of tough choices to be made.

Tine's brother comes for an unexpected visit.

Sarawat and Tin join a service trip to plant trees but a string of bad luck seems to follow them there.

Pam's arrival sets Tine on edge, causing him to question what is her relationship to Sarawat. Pam pushes her way back into Sarawat's life by begging for guitar lessons as she prepares for her audition at the college of music.

Sarawat seeks to earn Tine's trust after the misunderstanding with Pam.

A year after the events of 2gether: The Series, Tine and Sarawat face new responsibilities as the leaders of their respective clubs. As Sarawat chooses Tine to be the music club's new secretary, some people start to question his qualifications. This prompts Tine to prove himself worthy of the position.

With both clubs moving into adjacent rooms, trouble ensues as Tine's and Sarawat's club members have to compete with each other during practice sessions. Boss and Phukong continue to pursue their respective love interests while Type struggles to tell Man about his consequential job promotion.

As both clubs get busy for the "2U Traditional Footbal Match," Tine and Sarawat have to focus on their respective club performances making it difficult for them to find time for each other. To make matters worse, Tine later finds out that Sarawat has to stay out for two weeks for band rehearsals.

The strict house rules in Dim's place makes it difficult for Sarawat to get in touch with Tine. As the music club rehearsals get intense, a mishap happens to one of their members prompting the group to find a replacement. With high hopes of being reunited during the "2U Traditional Football Match," Tine's and Sarawat's responsibilities to their respective clubs keep getting in the way.

After enduring weeks of constant rehearsals for the "2U Traditional Football Match," both clubs reward their members with a beach getaway. However, the unresolved quarrel between Dim and Green threatens to spoil the fun. Tine meanwhile sets up a plan to surprise Sarawat for their couple anniversary.