The lifeguards have an opportunity to show what they're made of in the Lifeguard Challenge ? a mid-season competition to prove who's the fittest and fastest among the elite watermen. Tensions run deep between old-hand Corey and young Turk Reidy as they go head-to-head in the water. Surprisingly, for such a handsome group of men, many of the lifeguards are single. They all decide to head off to a speed dating session to try their luck - with hilarious results. Meanwhile doctors discover that Takahiro Ono suffered a heart attack in the water and didn't drown as some suspected. When lifeguards visit him in hospital he becomes very emotional.(Summary from Ten.com.au - Permission granted)