The K-drama ‘Good Boy’ blends action and comedy, captivating audiences with its unique storyline about retired sports stars fighting crime. Park Bo Gum stars as Yoon Dong Ju, a former athlete turned rookie police officer, showcasing a new side of his acting abilities.The K-drama ‘Good Boy’ blends action and comedy, captivating audiences with its unique storyline about retired sports stars fighting crime. Park Bo Gum stars as Yoon Dong Ju, a former athlete turned rookie police officer, showcasing a new side of his acting abilities.