The celebrity teams delve into two tasks. In the first, they must design and sell a New York City guidebook, with Regis Philbin on hand to appraise the books. Then, they create an interactive health segment, but the task comes with a twist.

Season 12 of Donald Trump's business-savvy series opens with 18 celebrity players creating and selling deli sandwiches. The star contestants include Arsenio Hall, Clay Aiken, Cheryl Tiegs, Debbie Gibson, Adam Carolla, Lisa Lampanelli and Penn Jillette.

The teams produce and perform a medieval-theme show for an audience, yet an insubordinate contestant and a serious injury mar the task.

The players have to produce themed living Lord and Taylor display windows featuring Ivanka trumps fashion line. The boys don't quite get women's fashion like the girls do.

The star players rev up to produce a live event spotlighting a new Buick vehicle, but one team is in danger of stalling out when the choice for project manager is questioned. Meanwhile, a deep division develops in the other team

The celebrity players are assigned to write and produce a viral video promoting a mop. It's risqué business when one team hatches a lusty concept. Meanwhile, serious divisions mar the other team.

The celebrities must host a launch party for a "mocktail" drink product. One team sets sail with a beach theme while the other produces an exotic Garden of Eden experience.

Fallout from a previous boardroom session results in one celebrity launching an emotional tirade and another one going missing. As for the challenge, the players must write, direct and produce a 60-second commercial for an entertainment Web site.

The remaining celebrities create original puppets for Henson's "Stuffed and Unstrung."

The celebrities must fashion an in-store display and create a slogan for a new fragrance. Business snafus unfold when two project managers spar and one team frets about an indecisive leader.

The stars must write and perform a 90-second jingle for a roadside-assistance program. But the task lacks harmony when mutinies and internal power plays mar both teams.

The remaining contestants produce a four-page print ad for a digital touch-screen hair dryer. Returning apprentices John Rich and Marlee Matlin then interview the final four celebrities, after which Donald Trump selects the final two players.

The final two contestants are tasked to create, host and sell tickets to a celebrity charity event that comes complete with a variety show and a charity-awareness ad. Eight previously eliminated stars return to help in the challenge.

The two finalists must successfully stage their celebrity charity event, after which the winning contestant is revealed.

Season 13 opens with 14 returning celebrities tasked to sell meatballs in a charity competition, but there are beefs due to a power struggle and an unorthodox approach to the mission. Stars include Trace Adkins, Stephen Baldwin and Gary Busey.

The teams jet to Universal Orlando Resort in Florida to produce an interactive 3-D photo experience, but an indecisive project manager and a tyrannical leader mar the mission.

The all-star celebrities must perform a soap-opera scene for a beverage-mix product. One team doesn't mix well, however, when a project manager tangles with an insubordinate member.

The celebrities must use a glass truck to promote a hair-care and spa-products company in a mission that challenges marketing skills. One team lacks harmony thanks to a troublemaker while another star is labeled a weak player.

The celebrities are tasked with creating original, three-dimensional artwork. But winning the task comes down to fundraising, and one contestant struggles with bringing in enough money to keep the team safe in the Boardroom. Meanwhile, the other team's Project Manager has to deal with a teammate who over-promises and under-delivers.

With Arnold Schwarzenegger as the new boss, the celebrities get right down to business with tasks from Tyra Beauty and Trident gum.

Donald Trump divides the celebrities into men versus women and instructs them to choose a team name and in a surprise twist, Trump asks them to choose the opposing team's project manager. For their first task they must run a New York City diner. The team who brings in the most money at the diner, including tips, wins. It isn’t long before the celebrities’ egos clash as they compete to see who will be the first celebrity to face Mr. Trump in the boardroom and hear the words "You’re fired."

The celebrities must create a live health segment showcasing a grape juice with the teams producing and editing viral videos for a new King's Hawaiian product.

This week's task is to make over the images of up-and-coming country singers Emily West and Luke Bryan in time for a People Country magazine interview, a photo shoot, and live concert.

Immediately following the last task, Trump summons the teams back into the boardroom and one celebrity's rude comment leads to a quick firing. Next, the remaining celebrities undergo grueling interviews with the first 'Apprentice,' Bill Rancic, and the most recent 'Celebrity Apprentice,' Joan Rivers.

The celebrity contestants are posed with creating a marketing campaign for Kawaski motorcycles and aren't afraid of pushing boundaries. Moo.la founder and CEO, Gemma Godfrey, assists celebrity attorney Patrick Knapp Schwarzenegger in overseeing the celebrities campaigns. As one team approached this task with humor, the other team seemed to take gender roles seriously - maybe too seriously. In the second episode the teams are shaken up and it's no longer ladies versus gentlemen. They are presented with creating a new See's Candy for none other than world famous chocoholic Buffett. Two representatives from each team are flown to Omaha, Neb., to present the candy to Buffett in person. Preparation is key in this task as one team fails to do their homework.