In 2010, those who are called "greenhouse flowers", "little sun" after 80 first overall into thirty years old. No matter how life before them, after that, they're like everyone else, is a doorsill important over thirty years old in this life. Since thirty, have to stand. "Li" is what? Only refers to marry and settle down? This is also our characters facing the confusion, questions. They will tangle, pain, depression, can also cause they think deeply, and try to find out the answers, the courage to face these problems.
Tong and Sun Ran's schoolmate at college, friends, they are different in character, the pursuit of different, but the same, they told all his peers, all have been flying dream, great ambition. But soon it would be thirty years old, they did not achieve their goals, even the psychological preparation is not ready. Gradually, they began to anxiety, pain.