Dad is taking Maddie to school on his bicycle, but their journey through the park soon turns into an intergalactic space adventure. They listen to the sounds around them and imagine themselves as brave explorers, shooting like rockets into the unknown.

Maddie and Triggs are at the seaside building sandcastles. But when one seashell starts to move, they realise it's no shell at all, but Sailor Nancy - the fanciest crab to ever walk sideways! Can they save Nancy's fancy sandcastle before the tide comes in?