Bomi, a Korean girl, and Nashipa, a Kenyan girl, are connected through a sponsorship. According to tribal traditions, Nashipa is facing an arranged marriage and sends a final letter to Bomi. Bomi, battling illness, earnestly pleads with her father, Yoseop. Carrying his daughter's last wish, Yoseop travels 10,000 km to the unfamiliar land of Kenya. However, upon arrival, he learns that Nashipa has vanished without a trace. Yoseop embarks on a search for Nashipa, following a single thread of hope...