Gu An'an, the daughter of the richest man, has been autistic for three years due to a knot in her heart and has not said a single word. Her mother, Mrs. Song, offered a reward of one million per sentence, inviting people far and wide, but all returned empty-handed. Lan Bai, a young street guy, was unexpectedly invited because of his prank videos. He didn't follow the conventional healing route; the moment they met, he whistled and spoke shockingly, instantly making the young miss who had been silent for three years speak up. He used down-to-earth fireworks of life to melt her ice-bound heart little by little. The two went from bickering and fighting to falling for each other, and finally Gu An'an stepped out of her closed-off world. A healing romance of running towards each other is staged from here on.