Lu Ci, a newly graduated social-phobic young man, unexpectedly gained the ability to talk to animals while working part-time at a pet hospital. The Labrador who licked his own hair to comfort his depressed owner, the parrot who reminded his deceased wife to take medicine, the old cat who protected his owner with silence... He understood a hundred kinds of unspoken love, and met the equally silent girl. It turns out that all the tenderness in the world is hidden in the unheard voice.