Film from 1967.
Oyama
南洋のオベリスク島にやってきた探検隊は、その地でガッパという怪獣の子供を発見した。彼らは研究のため、子ガッパを日本に連れ帰る。そして子供を奪われた親ガッパたちが、子供のテレパシーをたどり日本に上陸してくる。防衛軍はただちにこれを迎撃するが、ガッパは熱線を吐いて街を壊滅状態に追い込んでいく……。
Arikawa runs a transport company. But this is only a front for his gambling house. Yuriko is a regular on the scene, and she is fascinated by the dice and the one who throws them. A year before, Yuriko's father died in mysterious circumstances; she decides to go in search of the truth.
Businessmen arrange the early release from prison of Togawa, serving time for taking revenge on the truck driver whose carelessness confined Togawa's sister, Rie, to a wheelchair. They want Togawa to hijack an armored truck loaded with 120 million yen; their leverage is to promise him money for surgery for Rie. Togawa consents and plans the heist with three others. The plan is solid, but it doesn't go smoothly. Togawa must improvise, there are traitors somewhere, and double-crosses mount. Can Togawa escape with enough money to help his sister and ensure a passage out of Japan?
A sequel to Detective Bureau 2-3: Go To Hell Bastards!