A secret agent. Sometimes they have to shoot even their own comrades to complete their missions. Codename Canary, Rumi. Her weakness is that she is too kind. In this world where even a moment of hesitation can be fatal, Canary's kindness is fatal. Kabura, a senior agent and lover of Canary, fires her. Canary begs for one last chance, so Kabura proposes to her that she be his wife after the next mission, but...