Her unique gothic lolita style fashion makes Detective Ichiko Hanamori (Mikako Tabe), nicknamed "Wanko" (meaning "puppy" in Japanese), stand out, but what stands out more is her extraordinary sense of smell. She never forgets the smell of something she's smelled once.

This police drama follows Wanko as she comically solves case files using her nose like a bloodhound. Can she out-smell her rival police dog?

性格独特、充满性感、打扮时髦的花森一子（多部未华子饰），绰号「小汪」（在日语里是‘小狗’），格外引人注目，怎么看都不像刑警。但更令人注目的是她的超强的嗅觉。因为她的嗅觉比狗还灵敏，只要闻过一遍就绝对不会忘记。

她利用像一只警犬般的嗅觉侦破一件件疑难事件。
她能否胜过她的对手，即真正的警犬呢？