Ji-an discovers her uncle's mysterious shopping mall and is attacked by unidentified individuals seeking his supplies after his sudden death.

Dongsoo leads a solitary life, spending his time uploading music to the internet. His ordinary life is upended when he is kidnapped by an organ hunter, who takes out one of his eyes. Soon, Dongsoo is sharing the vision of someone who got his eye. Through the connected vision, he learns that the taker is a notorious serial killer, and pursues the murderer to get his eye back.

Lee Gang-Doo dreamed of becoming a soccer player, but an accident ended those dreams. His father died in the accident and he broke his leg. Lee Gang-Doo spent 3 years in rehab. Now, he doesn't have anything and just wastes his days. Lee Gang-Doo then meets Ha Moon-Soo. Ha Moon-Soo makes architecture models. Ha Moon-Soo also endured an accident that killed her younger sibling. She has suffered from guilt that she survived. She has lived her life earnestly, while suppressing her feelings. After meeting Lee Gang-Doo, Ha Moon-Soo begins to express her hidden feelings.

A working class family move into a new condo purchased after 11 years of hard work. They throw a housewarming party to show his co-workers when overnight a heavy downpour creates an extremely deep sinkhole that engulfs the entire building.