Isabelle and Oona call to see Mossy, only to find him missing. Oona is worried. Flynne hasn't seen him, but she's sure she can find Mossy quicker than the pufflings can. The trio head off, but they’re an unlikely group - it seems puffins and foxes don’t have much in common at all. But when they all work together, they learn that their different skills make them a great team.