S1E4: I'm Back

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, but things have turned out strangely while she was gone. Sol is officially dating Tae-sung and Sun-jae feels confused and betrayed about Sol. He wants to keep a distance from Sol, but Sol keeps showing up. Meanwhile, Sol gets lost on her way home.