^{(Ep 1-4)}   Yuna and Joonwoo’s initial encounters are fraught with mistrust. Yuna’s visions help Joonwoo avoid a deadly car accident, but her interference seems to trigger even more dangerous consequences.

^{(Ep 5-8)}   As Joonwoo digs deeper into the conglomerate’s secrets, Yuna discovers her family’s hidden legacy. The two realize their connection spans across timelines, and Joonwoo starts remembering fragments of past lives where Yuna always tried—and failed—to save him.

^{(Ep 9-12)}   The conspiracy intensifies as Soyeon learns about Yuna’s abilities and tries to manipulate her into changing events to protect the conglomerate. Yuna and Joonwoo struggle with the morality of altering fate, especially when it risks the lives of innocent people.

^{(Ep 13-15)}   Yuna uncovers the truth: if she successfully saves Joonwoo, the timeline will collapse, erasing her existence. Torn between her love for him and her duty as a timekeeper, she faces an impossible choice.

^{(Ep 16)}   In a heart-wrenching finale, Yuna makes the ultimate sacrifice to stop the conglomerate and save Joonwoo. The timeline resets, leaving Joonwoo with only faint memories of her. Years later, they cross paths again—this time, in a world where their love might finally be free from the shadows of tomorrow.