Sol and Sun Jae reunite as promised at Hangang Bridge. Fearing separation, Sol convinces Sun Jae to spend the night together, leading to a realization of their feelings. An unexpected incident leaves Sol distressed.
A new attack leaves Sun Jae critically hurt. The changed timeline prompts Sol's time travel to his college as a student. Paths repeatedly cross despite her efforts to avoid him. Sun Jae gets a US rehab training opportunity.
Sol escapes her captor and Sun Jae rescues her, finding herself back in 2023. Her legs are healed, she works in film production. Hyun Ju and Geum are married with another child on the way. Sol attends Sun Jae's concert to reunite with him.
Confused Sol realizes she must save Seon Jae, though can't reveal the future. She attempts befriending him, facing difficulties as Tae Sung grows curious about her sudden change and Seon Jae is bothered by her abrupt appearance.
Seon Jae, a talented swimmer, wins gold but gets injured during practice. As he contemplates quitting, Sol tries supporting him, leading to a romantic confession.
Sol breaks up with Tae Seong thinking he dated her to avoid another girl. Sun Jae attempts to win Sol's heart. Sol tries preventing a future accident. Tae Seong ends up hospitalized after an accident where he encounters someone unexpected.
After getting into an accident, Sol finds hope through a phone call from singer Seon Jae. Years later, she attends his concert only to witness his death, mysteriously traveling back in time to 2008 when Seon Jae was alive.
In 2023, Sol couldn't prevent Seon Jae's fate but changed the past. Returning to the altered timeline, she's dating Tae Seong while a betrayed Seon Jae avoids her. Sol pursues him relentlessly, eventually getting lost on her journey home.
Sun Jae saves Sol's life, inspiring her to live fully. Tae Seong envies Sun Jae's closeness with Sol. Despite Sol's objections, Sun Jae temporarily joins Tae Seong's band as a vocalist, winning a prize that displeases Sol.