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NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One ...。身为警校优秀毕业生的钱小天（王韬饰）一心想加入刑警队，干一番事业，却被分配到警犬队，与警犬“饺子”成为朝夕相处的战友。但傲娇的饺子似乎并不听话，小天也屡次犯错被队里批评。眼看同届毕业的李可（童苡萱饰）和Youki表现出色，不服输的钱小天决心改变，随着他和饺子逐渐建立信任，他们的实战成绩也一路逆袭。警队比武大赛在即，一次意外发生了……。