Season 1 of The Deal premiered on October 6, 2023.

When Lee Moon-Sung was a high school student, he was a promising soccer player. He does not play the sport anymore and his life is now a mess. He decides to quit his wandering ways and start a new life. But, Lee Moon-Sung gets involved in a kidnapping case that is initiated by his friend Song Jae-Hyo, To escape from his trouble and collect one billion won, he carries out the kidnapping of Park Min-Woo on a whim.