The series follows Detective Carter, a radical LAPD detective, and Detective Lee, a by-the-book detective from Hong Kong, as they are forced into forming an unlikely partnership

After Gerald is arrested for wearing an expensive watch that was stolen in a robbery/homicide, Carter sneaks his cousin out of jail in order to use his street contacts to track down the killers.

When a young graffiti artist witnesses the murder of an LAPD Detective, Carter and Lee must track him down so they can prove that a well-known criminal is responsible.

When two people with no obvious connection receive similar notes and are then killed by targeted bombs in 24 hours, Carter and Lee have little to go on as they scramble to identify the bomber before he strikes again.

When Lee’s sister, Kim, risks her life to tip him off about the Quantou gang trafficking women into Los Angeles, Lee leaves Carter in the dark while he gathers inside information about the gang’s plans to infiltrate the city.

A student's murder prompts Carter and Lee to go undercover as administrators at an elite high school where they learn the victim was really a police officer posing as a student to investigate illegal drugs on campus.

After thwarting an armored truck robbery on a busy highway, Detectives Carter and Lee discover it may have been a dry run for a bigger heist but disagree who the suspects are.

A smitten Carter asks Lee to be his wingman with a beautiful witness, Nina, who they are protecting before she testifies against her former menacing boss.

Detectives Carter and Lee hunt an escaped prisoner searching for his estranged wife and daughter who are in witness protection. When the pair goes missing, the Detectives must find how their location was compromised.

Captain Cole enlists the help of Detectives Carter and Lee as she fears the return of a serial killer when a young woman’s recent disappearance at a hotel believed to be haunted mirrors a series of chilling unsolved cases from five years ago.

Carter and Lee discover that a hostage situation at a concert hall is more than a robbery gone wrong.

When a meeting of rival Los Angeles gang lords is orchestrated by the Quantou gang, Carter and Lee must infiltrate it to find Lee’s sister Kim and save her from going further with the Quantou.