Why is it so Warm on Christmas?(크리스마스가 따뜻한 이유는 말이죠)

Movie star Eugene gains superpowers and sets out to become a superhero. On his own, and even without a tragic backstory, needing help to equip himself in this new role, he seeks out and befriends fellow nerds online. They end up becoming a community rather than a vigilante type hero. And then they kick some ass.