Gyakuten! Ippatsuman is the sixth in the Time Bokan series. In the 1990s-era Osteandel City is the headquarters of Time Lease, a business that leases almost everything you could ask for including powerful robots. They are proud of themselves for being number one in the international ranking of billionaires, for the past ten consecutive years. Meanwhile there is another lease company in the same city called Skull Lease where the notorious villain trio work as top executives. Their ostensible object is to disgrace the credit of Time Lease and replace them as the leading enterprise. In fact, however, they have a scheme to secure a footing for world conquest. One day a transport robot of Time Lease is assaulted by the villain trio and it is time for Ippatsuman to get on the move to fight for justice.

Nian Yangxiao, came from a parallel world to save his true love who was killed in another dimension. He must find the killer who has a mark on her thigh before it was too late. If his love is killed in this world she will truly be gone forever. He has to deal with the various gangs with the help of a newly acquired power which can stop time.

Nian Yangxiao, came from a parallel world to save his true love who was killed in another dimension. He must find the killer who has a mark on her thigh before it was too late. If his love is killed in this world she will truly be gone forever. He has to deal with the various gangs with the help of a newly acquired power which can stop time.

Years ago, Zong Shuai from the Middle State, Wanyan Zang from the Northern Land, and Wen Taiji from the Southern Territory suffered great loss during their fight for the hegemony of the world. As a result, a 20-year truce was established. Now, with the deal coming to an end, conflicts are brewing in the ostensible peace. In hatred and suspicion, the three families set up their respective Blood Orders, listing the names of the most important people of the hostile families and swearing to hunt them down. A breathtaking war is about to commence.