Dong-hyun is a high school student. One day, he falls from the rooftop and bumps into Pan-soo who is a passerby. Pan-soo is a member of a criminal organization. When the two men wake up in the hospital, they discover that they have switched bodies.

An omnibus drama that shows the different encounters and breakups of five couples.

A movie about a white hacker club 'Better World' and a genius hacker 'HEX' having an inevitable showdown with the black hackers as the Songdo International Exchange was hacked in the fourth industrial revolution.