When Rey and Print are cast as leads in one of the most popular TV drama series of the year, they seem to feel that it's one of the worst things that could happen to them. However, things get much worse when a mysterious woman appears to them during rehearsal and entwines their lives in an inescapable and fateful fashion.

Rey and Print face challenges living each other's lives but do their best to help each other out as shooting for the TV series kicks off. Winmai and Saifon's rivalry takes an interesting turn when they both embark on a mission to try to help Rey and Print.

During Rey's stay at Print's place, the two women revisit the childhood event that led to their rivalry. The shared trauma of this walk down memory lane is made worse by publicity pressure and interference from Rey's mom. Meanwhile, Mai and Fon discover a couple of revealing little secrets about each other.

In a quest to follow up a lead on the mysterious woman behind Rey and Print's body swap, Rey, Print, Mai, and Fon visit the town in which Rey and Fon grew up, Chanthabury. While there, Rey and Print spend some quality time together and find a way to get past their shared childhood trauma while it is revealed that Mai and Fon have a much closer history together than previously suggested.

After their return from Chanthaburi, Print's crush for Rey comes to a head during a rehearsal for the The Doll Mansion but Rey ends up believing that Print's crush is actually Auer. When it comes to light that Print has no eye for Auer who, on his part, has his eyes set on Frank, Rey is left wondering who Print's actual crush is.

Things take a darker turn when Print is stalked by one of her online fans after Rey blocks the fan for directing misogynistic comments at Print. Still, not all is doom and gloom as Mai and Fon get closer following Fon's encounter with the stalker and Rey and Print finally confront the mutual feelings they have for each other.

In the midst of enjoying their newfound love for each other, Rey and Print get the opportunity to switch back to their own bodies after the mysterious woman suddenly reappears. Mai continues to be an obstacle to the evident connection she shares with Fon.

As shooting for The Doll Mansion wraps up, Rey and Print face the challenge of convincing Rey's mother, Duen, to let them work together on a scheduled GL series in which they've been invited to co-star. As for Mai and Fon, after a lot of emotional turmoil, Mai finally finds it in herself to give love a chance.

Rey and Print's blissful life together is interrupted by an inconvenient proposal by Duen, a soul-crushing secret held by Print's family members, and an unexpected visit by the mysterious woman. Fon takes a major step in her life to be with Mai.

With Rey and Print back into their own bodies, they confront one of the first major hurdles of their relationship as they spend time with Print's family and Print adjusts to having a stranger be a part of the family. On the other hand, Mai wastes no time asking Fon to take a major step in their relationship.

Following Rey's refusal to go along with her mother's planned contract in China, her mother launches a smear campaign that threatens to ruin Print's acting career. Nevertheless, Rey sticks to her decision and makes a major career change and things eventually turn out for the best. On the part of Mai and Fon, Fon helps Mai learn the meaning of commitment and the importance of work-life balance.

Rey and Print's relationship weathers a three-year separation after Print gets a contract with a Korean ad company. Consequently, the two lovers take the next big step in their relationship with all their loved ones present to witness it. Mai and Fon make perfect business partners as they start their own business but their struggle for a healthy work-life balance continues.