Hayoung, raised in a devout Christian household by her pastor mother, and Jinwook, the son of the chairman of the Haeju Choi clan's Jwarang-gong branch lineage. Despite their differing religions, the two have been dating for two long years and are now preparing for the next step: marriage. To achieve this, they must overcome a major hurdle they've knowingly ignored: their parents. Jinwook's father, who constantly boasts about the 'Haeju Choi Jwarang-gong clan,' and Hayoung's mother, who frequently exclaims 'Hallelujah.' Unwilling to reveal their true religious beliefs due to their parents' strong convictions, Hayoung and Jinwook find themselves swept up in their family's traditions. Hayoung, a lifelong believer, ends up bowing to Jinwook's ancestors, while Jinwook, the eldest son of the prestigious Choi family, volunteers at Hayoung's church.