Top actor Park Seha—his "Bias" has jumped right into his perfect daily life?! Park Seha is the ultimate perfectionist and a top actor. Son Jieon is the reliable leader of a disbanded idol group. The two are cast side-by-side as the main characters in the queer film, <Brotherhood>. Unlike their film roles, where the characters slowly grow closer while solving a case, the noisy and outgoing Jieon seems like oil and water compared to the quiet, strict rule-follower Seha. However, there is one critical secret that no one knows: Park Seha is a massive, dedicated fan of Son Jieon! Contrary to Seha's desire to keep his distance, Jieon approaches him like a bulldozer, constantly begging him to "teach him how to act." Eventually, Seha wakes up the next morning to find himself in the same bed as Jieon...