Su Mu, the fourth son of the Su family, was disowned and driven out because of a failed investment. Through a coincidence, he wedded into the Chen family as a son-in-law, but he was looked down by everyone. His status was lower than the dog. However, a tiger must roar and a dragon must fly. One day, he will roar and fly up like the tiger and the dragon, and those who insulted him will kneel before him and beg for forgiveness…