Kim Hee Woo (Lee Joon Gi) came from nothing to become a top lawyer, transforming himself from a high schooler with poor grades to an esteemed public prosecutor. But tragedy strikes as he’s investigating a politician suspected of corruption… and a mysterious man kills him. However, instead of dying, he wakes up as his younger self – a college student with all his "future" memories intact. Determined to uncover the truth behind his murder, he restarts his academic journey. Along the way, he meets Kim Hee Ah (Kim Ji Eun), the super-intelligent youngest daughter of a powerful business family, and they begin investigating together. When their journey brings them to a shady cabal of rich power brokers, will they find the answers they’re after – or further mortal danger? Based on a web novel by Lee Hae Nal, this 2022 South Korean drama series was directed by Han Chul Soo and Kim Yong Min.