"Sirius" revolves around Identical twin brothers Eun Chang and Shin Woo. When they were teens, Eun Chang was a bright and popular kid, but went to jail because of Shin Woo. Since then, his life has changed completely. Meanwhile, Shin Woo always felt inferior to his brother and his feelings for his brother became more complicated after his brother was imprisoned.
Shin Woo is now the chief detective of a police investigation
