Dream of roof

There is a beach made entirely of suitcases, I'm climbing over them down a pathway to the main beach and some are open but empty. Suddenly the beach floods with clear water and I see a shark come towards me. When it gets close I realise it is an inflatable shark and no harm at all. I run off up the beach across the suitcases and find a camper van buried in the ground up to the roof. When I look in through the roof I see my friend hiding in the bottom. Also, in this dream I am thin and fit, in real life I am overweight and very much not fit.