In 1972, in Okinawa, which was about to return to its homeland, a cash transport truck containing $1 million in banknotes was attacked and disappeared.Mahoda (played by Issey Takahashi) of the Ryukyu Police Special Countermeasures Room, who is in charge of the secret investigation, together with his colleagues Yonaha (played by Takashi Aoki) and experienced Tamaki (played by Kaoru Kobayashi) and others began to track down the robbers.

The time limit for resolving the incident is 18 days after returning to the homeland.The fate of Okinawa is at stake, and a brutal search begins that involves Okinawa's financial circles, local gangs, and even people related to the U.S. military.