Just remember, Isla, when you're searching for happiness, it knows all the best hiding places. (Gran McGonnigle)

Isla McBay is not delighted to have left Scotland for sunny Australia. For starters, she can't swim - not great for pool parties. She misses her gran and her friends, her dad's giving her unbelievably irritating driving lessons, and she's constantly fighting with her younger sister, Terry, who always does everything first. Even her photography class with dreamy Sam Doyle and annoying yet intriguing Jack Ferris can't cure Isla's homesickness.

Then Terry comes to Isla with a serious problem, forcing Isla to make a choice: will she be the better sister Terry needs her to be - or will she close her eyes to what's really important?