A geek meets an abandoned dog, and they spend a warm and loving time together. Akanishi Tamio (Kei Tanaka), who was ruthlessly abandoned by his fiancée, is depressed every day. In order to cheer him up, his boss gives him a big white dog that was also abandoned by his owner to adopt. The big white dog, who was bullied by his owner, can't bark, but can only make a "haw" sound, so Tamio named him "Xiaoqiao". The two souls who were once abandoned slowly opened their hearts to each other, and the man and the dog became inseparable partners. Just when Tamio's spiritual trauma was about to be healed, Xiaoqiao accidentally got lost and wandered around, offering the warmest sunshine to the frustrated people he met along the way.