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.

Hyun-soo is a skillful individual stock investor, so-called ‘ant’. One day, he cashes in up seventy thousand dollars through stock trading and this jackpot gets him implicated in a $60 million stock manipulation by scam artists from various fields. With a huge pot of money before their eyes, the scam seems to be perfectly unfolding. But another scam is emerging underneath team as the scammers chase each other and are being chased at the end.