Under the big blue sky, Two vastly different people, from completely different worlds, Collide.  Lee HaNeul, a simple girl who struggles with her everyday expense and terminally ill mother in hospital, and Choi SeungHyun, Bigbang's charismatic rapper, propelled to fame and fortune, he's got everything he wants, but one thing. What happens as Destiny takes them on an unexpected spin under the big blue sky?