Meet the Friendship Fairies - sisters Emme, Holly and Jess. They're just like regular girls, always messing and having fun, but they're also fairies. Their mum works as a spy and she has a new case to crack - and this time she's taking the Friendship Fairies along with her to a little island off Connemara!

All the girls know is that they're going out to sea, and that they need to take their swimsuits ...

Can Emme, Holly and Jess help their mum solve the mystery?