In 2029, Korea's lunar probe Woori embarks on a historic journey to the moon, capturing global attention.
Ja-hyun receives a message from his deceased wife inviting him to reunite with her in a place called 'Yonder'.
Bori, an 11-year-old girl in a seaside village, is the only family member who can hear. As an elementary school student, Bori becomes more and more accustomed to talking with her friends while finding it hard to communicate with her family in sign language.