A knock on the door. A panic attack. A message sent too late. Infinity, Plus One is a Minsung story about loving someone who doesn't believe they deserve to exist-and loving them hard enough to make them stay.

Two idols. One dance. No room for mistakes. Hwang Hyunjin and Lee Felix have always been distant - colleagues, not quite friends, not quite strangers. But when a sensual, boundary-pushing choreography throws them into each other's orbit, everything begins to shift. What starts as tension on stage turns into tension off it. Glances linger. Touches last too long. And the line between performance and reality? It starts to blur. But the spotlight is a harsh place to fall in love - and as secrets, jealousy, and pressure build, Hyunjin and Felix are forced to ask: Is this just for the stage, or are they dancing into something real?