Big

Daran is eagerly looking forward to her wedding with Yunjae. But when her student, Gyeonjun, gets into an unexpected accident, their plans for a happy future are suddenly thrown into question.

Though Gyeongjun is getting used to being in Yunjae’s body, pretending to be him isn’t as easy as it seems.

Life takes an unexpected turn when Gyeonjun’s girlfriend shows up in town searching for him. Things get even more complicated as he’s forced to deal with Seyeong’s lingering feelings for Yunjae.

While Gyeonjun’s body remains hospitalized, his family begins discussing what to do with his estate. Meanwhile, Gyeongjun disrupts Daran’s attempt to purchase a new apartment for her future with Yunjae.

After discovering that Yunjae was unfaithful, Daran calls off the wedding. Upon hearing the news, Yunjae’s mother steps in and decides to take her son back.

After a brief encounter at a wedding, Daran becomes convinced she’s seen the real Gyeongjun. Meanwhile, Mary grows more suspicious about the body switch and decides to investigate his house for clues.

Kyung-joon, still in Yoon-jae’s body, visits his late mother’s grave, stirring deep emotions. Da-ran finds herself torn as her feelings for him deepen. Se-young starts sensing something is off, while Kyung-joon begins to uncover Yoon-jae’s hidden past.

Da-ran realizes her growing feelings for Kyung-joon, despite him being in Yoon-jae’s body. Kyung-joon, worried about the truth hurting her, pulls away. Meanwhile, hints about the body swap mystery start to come to light, further complicating their bond.

Though Daran and Gyeongjun are meant to be on their honeymoon, they keep being spotted separately by others. Meanwhile, Daran begins to come to terms with how she truly feels.

As Daran grapples with her emotions for Gyeongjun, Seyeong takes it upon herself to investigate—and discovers the truth behind his connection to Yunjae.

Daran discovers the truth and realizes that Yunjae’s feelings for her were real. At the same time, Mary and Gyeongjun gradually uncover clues about his biological father.

Daran and Gyeongjun take a camping trip where they finally surrender to their feelings for each other. But their happiness is short-lived as Gyeongjun begins to experience a side effect of the body switch—Yunjae’s illness.

Sure of her love for Gyeongjun, Daran prepares to give back the ring. However, revelations about Gyeongjun’s family and Yunjae’s condition force her to reconsider.

After realizing his mother had only been using him, Gyeongjun decides to head to L.A. Daran manages to stop him, but coming back won’t be without consequences.

Gyeongjun remains in Yunjae’s body but pretends to have lost his memory, hoping to make the transition easier for Da ran.

Gyeongjun and Daran have faced many challenges, but their love remains strong. As the body switch approaches, they promise to reunite no matter what.