Eun-sung executes his final plan to make Hae-in his own. As she tries to escape from his grasp with the help of Hyun-woo, will they finally find peace?

As Yoon Eun-sung increasingly interlopes in Hae-in’s life, Hyun-woo begins to feel jealous. Hae-in later shows up for Baek Du-gwan in his time of need.

As Hyun-woo and Hae-in spend time in his hometown, they awkwardly navigate their complex feelings. Hae-in later receives bad news about her diagnosis.

Hyun-woo unexpectedly shows up in Berlin to secure a treatment for Hae-in. Meanwhile in Korea, Hong Man-dae faces a crisis at his company.

Feeling betrayed by Hyun Woo, Hae In pushes him away and becomes cold. Back in Korea, Hyun Woo begins to unravel a scheme against Hae In’s family.

Despite being in a tense situation with Hae In, Hyun Woo remains firm about staying in the company as his suspicions towards Eun Sung grow even stronger.

Hae-in and her family go into hiding in Hyun-woo’s hometown to figure out their next move. Eun-sung discovers the truth about Hae-in’s health.

Eun-sung tracks down Hae-in, presenting her with an ultimatum. Meanwhile, Hyun-woo skillfully uses leverage to get Grace Ko on the Hong family’s side.

Hae-in makes a shocking announcement at a press conference. Hyun-woo launches a risky evidence-collecting crusade to save Queens Group.

Haein’s symptoms worsen as she suffers from hallucinations, which Eun-sung takes advantage of. Soon after, Hyun-woo finds himself captured and in danger.

The Hong family initiates a counterattack against Seul-hee and Eun-sung. Hyun-woo and Hae-in get to experience a freshly renewed life as ‘newlyweds.’

After Hae-in shows hesitation about the surgery, her loved ones try to persuade her. Meanwhile, Eun-sung heads to Germany with a sinister plan.

As Hae-in recovers from surgery, Eun-sung tries to stay right by her side. Meanwhile, Hyun-woo searches for evidence to vindicate himself.

Baek Hyun-woo and Hong Hae-in navigate a tense relationship, both at home and at work. But upon deciding his future, Hyun-woo pays a visit to his family.

After Hae-in reveals her grim news to Hyun-woo, he begins to treat her nicely. Meanwhile, Hae-in’s old classmate returns to Korea and joins Queens Group.

Hyun-woo discovers troubling evidence after saving Hae-in from a boar attack. Meanwhile, the two slowly find their long-lost feelings reigniting.

The auditorium quickly becomes a trap for the two newly united teams of survivors. Byeong-chan’s video logs reveal a drastic solution to the crisis.

Though a surprise protector provides the group safe passage to their next stop, Yoon Gwi-nam is not far behind. The military makes a grave decision.

The students make it to the quarantine camp, each of them weighed down by tragic loss. Months later, they hang on to hope for a survivor.

To make it out of the music room and onto the roof, the students put into action their most perilous plan yet. Elsewhere, Jae-ik comes across a setback.

Jae-ik and his crew run into a student from the school. Na-yeon works up the courage to face her peers. The group shares confessions around a fire.

A disturbance at the camp shifts the military’s understanding of the virus. A thunderstorm provides cover as the group agrees to keep on moving.

The group clears a path to Cheong-san using sound to draw away zombies, but a new type of threat surfaces. Nam So-ju breaks out of the quarantine camp.

Martial law is imposed on the city. When Cheong-san is separated from the rest of the group, On-jo leads a mission to use a drone to locate him.

In need of a cellphone, two students take a risky journey to the teachers’ office. Byeong-chan passes on critical information to Detective Song Jae-ik.

The infected multiply in droves. Scrambling for their lives, Nam On-jo and Lee Cheong-san find safety with others inside a classroom — but not for long.

When one of the group is scratched while fighting a zombie, Lee Na-yeon demands they kick him out. Outside, the virus swallows up the city.

Inside Lee Byeong-chan’s science lab, a student incurs a seemingly harmless bite. Shortly after, a fast-spreading outbreak soaks the school in blood.

After Sun-jae and Sol’s brief and misunderstood encounter at the award ceremony, Sun-jae is accidentally given the wrong script proposed by Sol. However, upon reading it, Sun-jae becomes inexplicably determined…

Sol passes out on the Ferris Wheel and Sun-jae takes her to his place and looks after her. Sol wants to draw a line, but Sun Jae can’t stop having…

Sun-jae’s memory comes back and now he remembers everything that happened between Sol and him. Thanks to Tae-sung, the ill-fated relations are resolved and the couple can be together. Sun-jae…

Sol is confused about the situation, but one thing she knows is that she must save Sun-jae. She finds out that she can’t directly explain the future. To save Sun-jae,…

Sun-jae wins the gold medal at the competition and he decides to confess his feelings for Sol. But due to unexpected events, it’s not as easy as it seemed. Sol…

Sol is back in 2023. She couldn’t save Sun-jae, but she found out that she did make some changes in the past. She manages to go back in time again,…

Sun-jae saves Sol just in time. Sol realizes how precious her life is and tries not to miss out on many things. Tae-sung feels jealous of Sun-jae who seems close…

Sol breaks up with Tae-sung, thinking he only dated her to avoid the girl who likes him. Sun-jae tries to be cool with Sol so he can win her heart,…

Sol manages to escape from the kidnapper and Sun-jae saves him. At that moment, Sol is back in 2023. She is relieved to know that Sun-jae is safe as well,…

Sol and Sun-jae meet at the Hangang Bridge as they promised. Sol is worried that something might happen to Sun-jae if she lets him go. She insists they spend the…

Sun-jae is attacked again and he’s in a critical condition. Police disclose information on the culprit and Sol notices that the timeline has changed again. She manages to find a…