The iron triangle Wu Xie, Pang Zi and Zhang Qi Ling restart their adventure after receiving an unusual text from Wu Sansheng. Wu Xie, Pang Zi and Zhang Qi Ling have hung up their hats to end a ten-year promise. After trading their adventures for a normal life, a text from Wu Sansheng drives them to embark on a mysterious journey for the sake of family and friendship.