Contra © 1991 Konami Industry Company, Limited.
Following the triumph of Bill Rizer and Lance Bean against Red Falcon's second attempt to conquer Earth, another extraterrestrial threat known as Black Viper who has seized a secret naval laboratory to develop a new breed of supreme alien being.
As a result of this, Lance Bean (a.k.a. Scorpion) is on his own in a mission to wage war against Black Viper and his subordinates.
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