18 Again revolves around a 37 Year Old Dae-Young, who’s work and marriage is on the rocks. He miraculously got his wish to become 18 again and the opportunity to choose his path once more.
Ma Yi-deum is a materialistic prosecutor who does not hesitate to use personal attacks, cook up evidence, and incite perjury to win her cases. One day, she is assigned to a special task force for sex crimes and team up with Yeo Jin-wook, a newbie prosecutor who cannot tolerate her. Are they able to cooperate and crack the cases?