In Career mode, players take on the role of an undercover police officer seeking to break up a syndicate operating within the underground street race world. Like Most Wanted, players achieve this by completing both Racing Events and Pursuit events - the majority of events in this mode include the opportunity to "dominate" them by completing them faster than a specified time record for domination. In Undercover, progress in the story involves completing events that not only earn money, but also experience (or Wheelman Rep) and a special performance bonus - these bonuses either improve the player's driving abilities with all cars or provide other bonuses to the player's playthrough (i.e. an increase in race earnings). Earning enough experience levels up the player's Wheelman level, unlocking a larger performance bonus, new cars and upgrade parts, as well additional events including Jobs - special story-based missions in which the player must complete a specific task such as taking down a criminal's car. Police pursuits in this mode function like in previous editions, though the player's Wheelman level directly impacts how aggressive the police are when in pursuit of the player; the higher the level, the more tactics and vehicle types used in the pursuit.
Players can freely select any event from the game's map, or by using a hotkey to move on to a highlighted event after completing their current one, and are able to replay previous events but only for a reduced amount of cash. The game features a wide variety of licensed real-world cars which are divided into three tiers of performance and four classes - Exotic, Tuner, Muscle, and Sport. Players begin Career mode with a limited selection of cars to use and purchase, but unlock more as they level up and can earn additional cars by defeating criminals in the story. Cars, upgrades and customisation can now be done by visiting the player's safehouse, rather than separate stores, with fine-tuning of a car's performance also conducted in this manner. For the Nintendo DS, PlayStation 2, PlayStation Portable, and Wii editions of the game, players can also use police vehicles but only upon unlocking them during the main mode. Cars receive only cosmetic damage during the game, except in Highway Battles and Job events, where it is possible to "total" a car in these event, the latter per specific parameters assigned to the Job the player is undertaking.
Multiplayer mode varies across the platforms the game was launched on - online multiplayer is possible on Windows, PlayStation 3 and Xbox 360 editions; PlayStation 2 and Wii editions feature split-screen multiplayer; while mobile phone platforms do not include the game mode. For online multiplayer, events consist of multiplayer versions of Sprint racing and Highway Battle, along with a team-based event entitled "Cops and Robbers" - two teams of players compete against each other to score points across two rounds; in the first round, the "Robbers" collect flags and deliver them to specified areas to score points, while the "Cops" attempt to arrest them to earn points, whereupon in the second round, the teams switch roles, with the team with the highest score winning the match. While the PlayStation 2 and Wii features Cops and Robbers in its multiplayer mode, albeit with fewer players allowed, they also feature two exclusive events - "Lap Knockout", in which players compete across a circuit, with the last player at the end of a lap being knocked out and the winner being the remaining player at the end; and "Timed Circuit", in which players compete across a circuit over a predetermined length of laps and time, with the player in first place at the end winning the event.
Plot
Setting
The game's story and events take place in the fictional region of the Tri-City Bay (the name influenced by the real-life city of Tri-City, Oregon), mainly during the daytime between sunrise and sunset. The region consists of four borough - Palm Harbor, a downtown city district; Port Crescent, a industrial port that also houses a naval base; Gold Coast Mountains, a mountainous region of observatories and wind farms; and Sunset Hills, a suburban town with rural farms - with each borough linked to the other by a series of highways. The region's design was heavily influenced by the real-life city of Miami, alongside locations visited by the development team across the Gulf Coast and California Coast, with the setting's open world map consisting of around 109 miles (175 km) of road.
In the Nintendo DS edition, the boroughs are named Metropolis, North Port Crescent, South Port Crescent and Riverton, while in the Wii and PlayStation 2 editions, the game's setting takes place within a carbon-copy of two boroughs taken from Most Wanted's setting.
Story
The player, an undercover police officer for the Tri-City Bay Police Department (TCBPD), is called in to Palm Harbor police station by their superior Lt. Jack Keller (Paul Pape). The player is informed that their current investigation into the region's underground street racing world is to be joined by Inspector Chase Linh (Maggie Q), a federal agent of the FBI, who wants to bring down an international criminal syndicate operating in the region that is involved in smuggling stolen cars. The player is instructed to pose as a new street racer and join in on major illegal street races, along with gaining infamy with the TCBPD, in order to secure entry into the syndicate. The player achieves this by being recruited into a gang that works with the syndicate, run by Hector Maio (Kurt Caceres) and his brother Zack (Joshua Alba). At the same time, they befriend Carmen Mendenz (Christina Milian), a member of the gang. The brothers quickly assign the player to steal cars for them during their racing activities. Upon completing the jobs, Chase instructs the player to arrest the gang, including the brothers.
With Hector's gang out of action, the player is sent to Sunset Hills in order to get recruited by a crew operated by GMAC (David Rees Snell) - a former TCBPD police officer - Rose Largo (Heather Fox) - an honor student who turned to crime - and Brad "Nickel" Rogers (Lawrence B. Adisa) - a former boxer. Whilst conducting races along with jobs for the crew, the player is instructed by GMAC to steal a car from Chau Wu (Daniel D. Lee), the leader of the syndicate the player is investigating. When the player finds themselves confronted by Chau, he offers to overlook the theft in exchange for the player's help in recovering a car he lost that he needs back, believing it was stolen by GMAC's crew; a meeting with Carmen suggests the theft was likely committed by someone else. Eventually, the player is instructed to arrest GMAC and his crew, though is unable to locate the stolen car in their possession.
Shortly after arresting GMAC's crew, Carmen contacts the players and requests a meeting. Upon reaching her, she reveals that Zack and Hector unknowingly stole the missing car from Chau, and asks them to get rid of it for her. Chau quickly contacts the player the moment they take possession, and receive instructions to deliver it to a warehouse, learning that he knows them to be a police officer and that they have kidnapped Chase to coerce compliance from them. Upon delivering the car, Chase reveals herself to be a corrupt federal agent, who was working with Chau to recover the car as it possessed vital evidence of his activities and a sizeable quantity of cash. Before Chau can dispose of the player, Chase betrays him, murdering him and his henchman, before framing the player for their murder while escaping with the money and evidence.
