When the sun sets, the Hongs, the perfect model family, busy themselves with the family thieving business. As descendants of Hong Gil-dong, the Joseon Kingdom's (1392-1910) Robin Hood who stole from the rich to give to the hardworking poor, they scheme to fight against corrupt business mogul (Kim Soo-ro). But the family secret becomes a problem when Hong Mu-hyeok (Lee Beom-soo) plans to marry his girlfriend.