The Angel of Death

Ariel's life is finally looking up. She is looking for an apartment with her boyfriend Seungmin, has a great carrier ahead of her and has a strong head on her shoulders. But everything starts to crumble with just one phone call. Her dad is in the hospital again. The cancer is back. She tries to console herself, saying that they've been through it once, they can do it again. But this time its more aggressive and it spread to his pancreas.
Her father gets the chance to be part of a human trial om a cure for pancreas cancer, and he doesn't survive it.
Ariel is suddenly confronted with so many questions. Will her relationship survive? Can she go back after giving everything up? And who is that nurse that was in charge of her father's progress?