Sammo and Terrell pursue a sweatshop proprietor suspected of selling babies.

Sammo's nemesis, Lee Hei, is back in the US and attempts to assassinate the mayor of Shanghai.

Sammo and Tyrell go undercover to infiltrate a gun-smuggling operation run by prison inmates.

Sammo and Tyrell go to a prison to pick up Anton Trimble, the highest ranking Scorpio member ever captured alive. Scorpio tries to rescue him and show off their new weapon at the same time. They use an EMP weapon to disable all the electronics in the prison and the surrounding area. Sammo and Tyrell escape with Anton and are chased by a group of Scorpio agents. Meanwhile Grace is trying to find a way to get into Scorpio via her links with Kyle Strode.

Scorpio implements its plan to control the world by causing a randomly picked plane to crash. They know that they can now effect any plane, anywhere in the world and the governments of the world will soon be at their control. Meanwhile the MCU tries to find out where 'The One' is running his operation from. Sammo has a chance to capture his son but decides to give him the chance to choose the right path and lets him go.

The MCU discover that Scorpio began in Shanghai and has a personal grudge against Sammo. 'The One' steps up his campaign to kill Sammo by first dealing with his friends and family. He already has his son as a member of Scorpio and next he kidnaps Amy and her fiancé and buries them alive in their limo. Sammo, Grace and Tyrell have to find out where Amy is before he targets the next one of them.

A new designer drug hits the street. It is called 'Thrill' and it breaks down your inhibitions and imbues you with a euphoric sense of invincibility. Sammo and Tyrell have to deal with a gang of 'Thrill junkies' when a traffic jam they are in is attacked. They stop the gang but Sammo's leg is broken in the process. He ends up in the same hospital as Ludlow Teale, the government's chief negotiator for the Middle East. Kyle Strode returns to town and Grace continues trying to get inside his organization so that she can find Lone Wei. The MCU investigations reveal that Scorpio has something to do with 'Thrill' and they plan a major operation to show it's potential.

A new generation of spy satellite crashes down to earth in downtown LA. The FBI tells Amy that the only missing piece is extremely radioactive. If it is opened it could irradiate half the city. Involved in the bringing down of the satellite are the criminal cult Scorpio and their mysterious leader 'The One'. FBI agent Wick insists that Sammo and Grace are not to be allowed to participate in the case because they are both Chinese nationals and are probably Chinese spies. While this is going on Sammo is also trying to track down the whereabouts of his son, Lone Wei.

A corrupt councilman demotes Sammo and Terrell. Meanwhile, a gang war erupts, wrecking the plans of an L.A. mobster who wants to bring a pro-football team to L.A.

Lee Hei and his daughter continue to cause trouble for Sammo and his fellow cops. This time though they are told that if they don't catch them then their unit could be shut down.

Using his status as a new and unknown member of the LAPD Sammo goes undercover to help the team root out a group of vigilante cops.

Sammo's comes to America to find one of his colleagues from China who has disappeared whilst infiltrating an international car theft ring. Sammo ends up taking part in a cop exchange programme between USA and China.

Sammo and Tyrell accidentally mess up an Interpol undercover operation when they arrest some arms dealers. Charlton McCallister, the Interpol agent, knows that the female arms dealer he was pretending to work for has a very big deal coming up. Amy volunteers to go undercover, even though she has no experience of that kind of work. At her first meeting McCallister gets shot and injured and she has to carry on without him. Sammo takes on the part of her butler/bodyguard so that they can try and find out exactly what is being sold and who is out to buy it.

A visit to the bank reveals that $6 million dollars has been deposited in Sammo's account. He is still wondering what is going on as he leaves the bank and is immediately approached and kidnapped by some men. They want to know how he knows Alison and where she is? When he manages to escape he is determined to track down this girl before his captors do and find out exactly what is going on.

With the help of a federal agent Sammo and his fellow officers go after a gang who are counterfeiting money.

A group of robbers, all dressed up as Santa, hold up a toy store and get away with all the new Armando toys that had just arrived. Amy discovers that they, along with shipments of toys at the two other stores that have been robbed in the last few days, all came from the same lot number. Surmising that the robbers are after something inside the toy rather than the toy itself they investigate the toy firm and stake out other stores to find out what the thieves are really after.

Having not taken any time off for two years Sammo is told that he has to take a week off. It doesn't take him long to go stir crazy and he offers to help his neighbor, just out of hospital, by driving his cab for him. Meanwhile the rest of the MCU are involved in looking for a jewel thief and the murderer of a Marine Biologist.

Billy Rafferty, Terrell's former partner is found murdered. Terrell and Sammo investigate the last case he was working on, working undercover at a racetrack.

Terrell Parker, an LAPD press officer, sees his cousin, a rap artist shot by an assassin. His life saved only by the appearance of Sammo and Louis. Terrell tries to get himself involved in the investigation by partnering up with Sammo. Between them they uncover a CD bootlegging operation.

Sammo and Tyrell are given the assignment of 'babysitting' a prisoner who has bee given permission to go to his sisters funeral. The prisoner is Alistair Temple, 'The Silver Phantom', a master criminal whi is known to be able to get in anywhere, get out of any restraints and should never, never be left unguarded! When the three of them get to the church they are ambushed and Temple is taken from Sammo and Tyrell. Can Sammo, Tyrell and Grace find Temple, uncover who took him and why and manage to do it all before the news of his escape gets out and ruins Amy's chance of promotion to Commander of Administrative Technical operations.