第 1 季 共 16 集
播出时间：2023年9月26日
第 1 集 Want to Know a Secret? You're a CODA Too.
播出时间：2023年9月26日
Eun-gyeol and his family move into a new neighborhood. He meets a man who offers to teach him how to play the guitar, and Eun-gyeol works hard to learn it. As he deals with bullies at school, he practices playing the guitar until he is as good as the man who taught him. However, tragedy strikes, and he and his family are forced to move again.
第 2 集 How Could I Have Convinced You? You Can't Hear It Anyway!
播出时间：2023年9月27日
Eun-gyeol tries his best to quit music, but it's not easy for him to do. He gets scouted to join SPINE9, an indie band in Hongdae. To make things worse, he finally gets his hands on the guitar promised by the Viva Music store owner. He is torn by which path to take and finds himself walking into a suspicious music store.
第 3 集 To me… it's right now.
播出时间：2023年10月3日
Eun-gyeol gets stuck in 1995 and doesn't know how to return to the present. What's worse is that he meets his young father who can talk and wants to start a band for a girl who isn't his mother. Meanwhile, he poses as Yoon Dong-jin, a musical genius, and gets the attention of I-chan to join his band.
第 4 集 I'm from a world you can't even imagine.
播出时间：2023年10月4日
Eun-gyeol encounters Se-gyeong in her teens and learns a few things about her life that don't make sense in the future. Meanwhile, I-chan meets Chung-a for the first time, but she doesn't say a word. I-chan tries to get away from Eun-gyeol, but Eun-gyeol follows him to the Snail Guesthouse and ends up becoming I-chan's math tutor.
第 5 集 The accident Dad mentioned hasn't happened yet.
播出时间：2023年10月10日
Eun-gyeol resolves to stop the accident that caused I-chan to become deaf and clings to him, vowing to teach him everything he needs to know. He even promises to gift him the band I-chan needs. However, the school festival is in one month, and the person I-chan is doing this for has left the country and isn't going to return.
第 6 集 I think I'm too late this time, too.
播出时间：2023年10月11日
Everyone is confused at Se-gyeong's return, especially Eun-gyeol, who sternly warns her to stay away from I-chan. However, it doesn't work, and Se-gyeong approaches I-chan with different intentions. Meanwhile, Chung-a can only stand by and watch as she realizes she's lost her chance to tell I-chan how she feels.
第 7 集 Ha Eun-gyeol, where are you?
播出时间：2023年10月17日
Chung-a wakes up, realizing she's lying on a hospital bed, with the revelation that I-chan carried her there on his back. Later, I-chan learns her name from her tag for the first time. Meanwhile, Eun-gyeol has been silent for days, causing concern for I-chan. Attempting to locate him, I-chan hands out flyers and ends up facing trouble with local thugs. Se-gyeong desperately meets with each band member to verify something important.
第 8 集 Everything started changing the moment you arrived here.
播出时间：2023年10月18日
Eun-gyeol wakes up at the house of the Jinsung Family after the accident. He finds out that Chung-a was the daughter of Chairman Yoon Gun-hyung. Meanwhile, I-chan is hospitalized after getting beat up by the local thugs. Se-gyeong tells him that Chung-a was the one who called for help to save him. Meanwhile, Eun-gyeol decides to help Chung-a learn the sign language.
第 9 集 Make a choice. Is it me or Choi Se-gyeong?
播出时间：2023年10月24日
Astounded by Eun-gyeol's candid love confession for Se-gyeong, I-chan retaliates with a spirited punch. Eun-gyeol's attempts at self-defense lead to I-chan having a bleeding nose on both sides. The schoolyard transforms into a battleground as students try to intervene, and the entire situation gains momentum. Eun-yu is left in shock by the unexpected confession. Meanwhile, Eun-gyeol uncovers a hidden secret about Chung-a.
第 10 集 I want to learn sign language.
播出时间：2023年10月25日
Eun-gyeol can't hide his feelings for Se-gyeong and ends up kissing her. Chung-a's stepmother calls Eun-gyeol separately and tells him to quit before he teaches Chung-a sign language. The members of band decide to change their band name and theme right before the festival and ask Se-gyeong and Chung-a for help. Meanwhile, Eun-gyeol learns that Master has sent a helper for him.
第 11 集 We resurrected as Watermelon Sugar.
播出时间：2023年10月31日
As the festival draws near, the boys are intensely focused on fine-tuning their band performance. Meanwhile, Eun-gyeol reflects on a pivotal clue related to a potential accident leading to hearing loss. Believing Dong-jin to be the helper that Master mentioned, he pleads with I-chan to skip the rehearsal, but his request is dismissed. Meanwhile, Eun-yu grapples with the challenge of uncovering her mother's genuine first love.
第 12 集 If you are coming to the festival, choose me.
播出时间：2023年11月1日
Eun-gyeol successfully cancels the rehearsal and prevents I-chan from getting seriously hurt. Chairman Yoon extends the contract with Eun-gyeol and changes the terms and conditions. The day of the festival is finally here, and Se-gyeong has to choose between Eun-gyeol and I-chan. Chung-a decides not to show up at the festival.
第 13 集 It's not time yet. We can be together for now.
播出时间：2023年11月7日
As the enchanting glow of their festival fades, Eun-gyeol and Eun-yu acknowledge the depth of their feelings, hoping for a lasting connection. Meanwhile, the anticipated disbandment takes an unexpected turn, giving the boys another shot at the stage. The hurdle now is creating their own song, and I-chan suggests a gathering for this endeavor while musing on how to persuade Chung-a to join.
第 14 集 Are you two making a movie?
播出时间：2023年11月8日
Eun-gyeol and Se-gyeong realize that they’re both time travelers. He learns that Se-gyeong also had a mission to accomplish while she was in 1995. Eun-gyeol finds out that Chung-a has been confined and abused for the past 12 years. Meanwhile, Se-gyeong tells Eun-gyeol that I-chan’s accident didn’t happen on the day before the festival and that it hasn’t happened yet.
第 15 集 The real accident hasn't happened yet.
播出时间：2023年11月14日
Eun-yu drops clues about I-chan's real hearing loss incident to Eun-gyeol. Knowing that Eun-gyeol tends to shoulder blame for everything, she pledges to support him through this tough time. However, suspicions linger in her mind about the complexity of her connection with Eun-gyeol. Together, they methodically investigate everyone linked to the accident in search of the truth. Meanwhile, I-chan assures Eun-gyeol that he won't leave the house for the entire day.
第 16 集 Tomorrow is your only chance to go back.
播出时间：2023年11月15日
I-chan gets hit by a car and loses his hearing. Master tells Eun-gyeol to go back to his time, but he refuses, determined to catch the guy who hit I-chan. Se-gyeong convinces Eun-gyeol to return to 2023, and when he finally does, a completely different life awaits him.
