"Can'twealljustlivetogether?"Itwouldbenice,butforthetwinbrothersIl-doandYi-do,it'sjustawishfulthought.Bornunderacursedfateduetotheirparents'originalsin,onemustdiefortheothertolive.Toavoidthis,theyhavedeliberatelycutoffcontact.However,whenYi-do,whoworksforagang,getsstabbed,Il-dosomehowhearsaboutitandrushestodonateblood,savinghisbrother'slife.Butinsteadofgratitude,Yi-doattackshimthemomentheseeshim.
