Sam Fox, known as the trouble-magnet, has to pass big brother Nathan's though diving exam with his girlfriend Josie, or her father will stop their holiday plans. Sam left studying to the last morning and forgets his notes. Then he's driven off the road and hears help cries from sea, so he dives in despite a poisonous jellyfish warning. It's only a spoiled-rotten ingrate pop starlet, but while she bitches they drift off, she gets stung and he spots a huge tiger shark. Father Kingston isn't even surprised when Sam has to be reported missing, but once rescued by buddy Rikki's team, Sam ends up celebrated a hero and gets a one-off new exam the next day.