Billionaire Glenn Stearns takes on the daunting challenge of building a million-dollar business in just 90 days, starting with only $100 in his pocket.

Glenn hits a breaking point that sends him to hospital and threatens to shut down his mission of building a million-dollar business before it has started.

Glenn decides to take a risk and bet all the money he's earned so far on his most ambitious scheme yet, however there's a big issue with the new venture.

Glenn decides to double-down on his million-dollar idea with a bold new plan to expand the business, but a problem arises that could jeopardise everything.

Glenn is in hot water after losing a critical deal, and as the pressure mounts the rest of the Underdog team rally to flip a house that could save the business.

The Underdog BBQ team are up against a tight deadline as they prepare for their opening day, and Glenn may have let the cat out of the bag after a wrongly worded email.

Glenn invests every penny he has into Underdog BBQ's big debut and first real chance to make money. However, a problem with stock causes major issues.

Glenn is at the end of his 90 days and it is time to find out if he has created a business worth a million dollars. But first, Glenn must reveal his true identity.

With just $100 in their pockets, three business titans are dropped in unfamiliar cities and challenged to build a $1 million business in just 90 days.

Grant hustles to kickstart his business and get out of the RV, Monique needs work and pressure to test her concept, and Elaine lands on a million-dollar idea.

After a catastrophic setback, Grant struggles to regain his footing. Monique goes all in on her idea. Elaine expands her team and lands a critical business partner.

Grant receives a shocking call that could mean game over. Monique's plans go up in flames just before her investors pitch. Elaine comes up with a unique plan.

Monique doubles down when her fundraising deadline passes. Grant launches two $1 million business ideas. Elaine rushes ahead with renovations.

Elaine has a setback when an investor pulls out. Monique lands a side hustle at an iconic business. Grant struggles with his marketing company.

Monique's rent money rides on rebranding a business. Grant faceplants in front of a room full of potential investors. Elaine creates another money-making tranche.

Grant seeks redemption when a major deal implodes. Just as Elaine gains momentum transforming the inn, the ceiling caves in. Monique turns down a big pay day.

Three self-made billionaires go undercover in a small American town, where they have just 90 days and $100 to build a million-dollar business.

With less than a month to hit the $1-million mark, Monique gambles on a new revenue stream. Grant faces the team about their suspicions and Elaine makes big changes.

Monique steps up her game with a new sales tactic, Grant issues a manifesto to set his company on a new path and Elaine secures a big partnership.

Elaine's soft open is derailed by an unexpected disaster and a lack of funds. Plus, Grant has a breakthrough as he hustles to close two more deals.

As the 90-day challenge ends, Grant makes a final push for clients and reveals his true identity. Monique masterminds a Rooted experience for her valuator.

Three self-made billionaires go undercover in a small American town, where they have just 90 days and $100 to build a million-dollar business.