Nene Kusanagi is a detective. Her and her partner, Tsukasa, have been investigating a pair of criminals for awhile. They’ve had many run-ins with these thieves, a pink haired girl named Emu, and a purple haired boy named Rui, but they’ve never been able to catch them in the end.

“We’ll get them this time!” Tsukasa says confidently, as they arrive at the casino where the thieves were just spotted. The pair of criminals, who just finished their heist, leave the crime scene in opposite directions. Tsukasa takes off running after Rui, leaving Nene to chase the girl.