Ye Wan, an ordinary migrant worker, picked up a dirty stray dog on his way to get off work. She didn't expect that this dog could understand every human conversation word for word - whether it was the boss's conspiracy, the neighbor's secret, or the unattended whispers in the streets. When the ignored information becomes a key clue, Ye Wan's life is involved in a series of unexpected events, and she gradually realizes that having a "perfect audience" is both a gift and a danger.