New arrivals this week are 22-year-old graduate Lois, from Scotland, and streetwise Markus.
An idyllic start with the Tiger tribe is spoilt by a tense squabble between Sonny and Silkie. Later, the Tigers stage a talent show, followed by an evening of romantic dates in which Tom and Hermione kiss and spend the whole night alone under the stars.
Over on Shark Island, ex-Tiger Greg is visibly shaken when he hears about Hermione.
As the beach party approaches, the Tigers decide to up their game by building their very own bar - the Tiger Tavern. Will the Tavern be enough to lure Markus and Lois over to the Tigers? And will either tribe be ready for a shock announcement at the beach party?