KJ Agency, a well-known agency plans to create and produce a series. Therefore they gather young people who have the dream to become superstars. They join the "Beyond The Star" project to develop capabilities in all aspects of the entertainment industry, but only 8 of them will be selected in the end. Love, commitment or dreams, which ones are more important?

This sequel continues from where 2 Moons 2 left off and will show the progression of all three returning couples. Pha has to persevere in times of helplessness as Wayo's incriminating pictures and videos have been released by Park and Pring. The story will show the progression of their relationship after that scenario. Ming and Kit will have to learn to develop and mature in their relationship, while Forth and Beam will also settle down and progress in theirs. Two new couples are also being included. Their storylines are more along the "rival to lovers" sort of scenario. One of the pairs includes Suthee, the medicine moon.

Over the past 3 years, both of them had grown apart. “Venus” decided to quit his job. He planned to return to his hometown to take a career break until his passion for work was reignited. In the meantime, he killed boredom through helping with “Janus”, his older brother, who just opened a 24-hr. convenience store in a suburb. In the evenings, he would be responsible for small tasks such as delivering items to ‘regular customers’ whose residences were located on his way home. But one day, Venus met a customer who he had never met before. It surprisingly, turned out that such a customer was “Sky” who became a good-humored, highly energetic young doctor as always, despite mountains of workloads at the hospital. Upon seeing each other again, they couldn’t resist the feelings.