Taeyeon was suffering of a headache, not wanting to alarm anyone she went to a private doctor for a check-up. On her birth day, she received a call from the doctor. Then she learned about her condition and a Time limit on her life.

Scared and panic. The doctor advise her to have meaning in her life. So she runaway from her agency, family, and friends..... and start on her own adventure.

Jiyong was tired and overworked. His girlfriend was tired of his excuses and broke-up with him, So he runaway from everything too. 

What if in a twist of faith, they sit together on the same plane, bound to nowhere, and ended up running away together?