Shark!

Six Aussie celebs head to a Bahamas sanctuary to face their fears. Guided by experts, they brave escalating shark encounters, starting with a terrifying bull shark cage dive, to turn their deep-seated terror into fascination.

The celebrities complete a nerve-wracking open water swim across shark infested waters. They later attempt their first scuba dive in the Bahamas, which quickly turns dangerous when one celebrity encounters serious trouble under the water.

The celebrities deal with the aftermath of a medical emergency, and then attempt the Line of Terror - which brings them eye to eye with Caribbean reef sharks in the middle of a feeding frenzy.

The celebrities are tested in their toughest challenge yet as they scuba dive with Caribbean reef sharks, with one celebrity's fears pushing them to their limit. Later, the celebrities are shocked by the reveal of their next challenge: a night dive.

After conquering a terrifying night dive, the celebrities scuba dive with great hammerheads, but after the dive takes a terrifying turn, one celebrity makes a shocking decision.

The mission to better understand sharks comes to an emotional end as the celebrities come face to face with tiger sharks in the ultimate once in a lifetime final dive.