Kai thinks he's going crazy. But when he meets Luhan on a lonely bridge one day, Luhan becomes the only light in Kai's dark life. He's willing to sacrifice anything and everything for him and their happiness. But as days go by, Kai feels like he's losing himself more and more in his insanity. Time is running out. 

Luhan goes on a physics trip to an amusement park with a fear of thrill rides, but ends up going on the most unexpected ride of all.

Baekhyun is a brilliant artist that can paint anything with vibrance and colour except himself, and he feels dull with loneliness. This all changes when he meets Luhan, who brightens up his world and his heart. Luhan helps Baekhyun realize who he is and that all he needed was a little bit of colour to paint his own life.