Season 1
12 episodes · premiered Sep 26, 2026
High school friends Ha-na, Ha-ru, and Woo-jae are torn apart when Woo-jae is killed protecting Ha-na from a stalker. Years later, a mysterious accident sends the twins back to 2010, where they awaken in each other’s bodies. Determined to save Woo-jae, they must navigate swapped identities, changing timelines, and feelings that could alter the future.
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E1 Episode 1
After Woo-jae’s death, Ha-na begins traveling through time. She finally reunites with Woo-jae, but when he looks at her, he doesn’t see Ha-na—he sees Ha-ru.
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E2 Episode 2
With their bodies mysteriously swapped, the twins hatch a plan to save Woo-jae. But to change his fate, they must first turn him into a national team athlete.
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E3 Episode 3
Even after changing the past, Woo-jae dies again while saving Ha-na. As Ha-na falls into despair, Ha-ru suggests a new way to change their fate.
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E4 Episode 4
Woo-jae becomes a judo champion but is confused when he starts developing feelings for Ha-na in Ha-ru’s body.
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E5 Episode 5
The twins travel back to their college days and regain their original bodies. After discovering Woo-jae is majoring in security and protection, they search for a way to change the future.
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E6 Episode 6
A love triangle forms as Woo-jae and Hyeong-won compete for the same person, while someone discovers the twins’ secret of time travel.
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E7 Episode 7
Someone who knows the secret of time travel deliberately hid the camcorder. The twins’ investigation points to Hyeong-won.
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E8 Episode 8
The twins return to 2026, where Woo-jae has become an actor and turns his back on Ha-na. Meanwhile, Ha-na receives a mysterious screenplay.
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E9 Episode 9
The twins discover that Jun-mo is the culprit. To protect Woo-jae, Ha-na decides to break free from Jun-mo and give up her acting career.
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E10 Episode 10
The twins piece together the events after discovering Jun-mo’s true identity, while Jun-mo threatens Woo-jae, demanding that he bring him the camcorder.
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E11 Episode 11
As Woo-jae destroys the camcorder, the time travel comes to an end, bringing them back to 2026. However, while filming a movie, someone attacks Woo-jae and Ha-na with a knife.
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E12 Episode 12
To save Ha-na, who is in a coma, Woo-jae and Ha-ru travel through time. Can they uncover Jun-mo’s crimes and change their fate?