Five different girls formed the most invincible "Iron" team in history. Lan Yiyi’s sly male husband was inexplicably missing due to owing huge debts. The four sisters went through a series of ridiculous oolong incidents to help Lanyi’s debts. They and a group of five people staged the "family" feelings of the ancient city of Beijing.
| Directing | Chen Jian fei | Director |
| Crew | Wu Shu tong | Manager of Operations |
