While desperately searching for his missing daughter, Hae-kwan comes across an AI satellite robot that remembers sounds from all over the world. Rejuvenated by the robot's abilities, Hae-kwan begins to track down his daughter's voice. As they continue their journey, they form an unforgettable bond.
Lee Hee-joon | Jin-ho | |
Lee Ha-nui | Ji-yeon | |
Kim Won-hae | Goo-cheol | |
Chae Soo-bin | Yoo-joo | |
Shim Eun-Kyung | Sori (voice) | |
Ryu Jun-yeol | Underground Singer |
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