The main plot of the original Time Crisis arcade release involves an attempted coup in the fictional republic of Sercia. For a millennium, the Garo family ruled Sercia with an iron fist. In 1995, the VSSE International Intelligence Agency sent William MacPherson, who successfully toppled the Garo regime and became its first democratically elected president.
The last remaining member of the Garo family, Sherudo Garo, sought to recapture the throne from the hands of President MacPherson. He sends a mercenary named Wild Dog and kidnaps the president's daughter, Rachel. Garo demands military secrets in return for Rachel's safe return or he will kill her by sunset. VSSE sends its best agent, Richard Miller (called the One-Man Army) to invade Garo's castle and rescue Rachel.