Maya loves her small perfect family - it's just her, Gran and their little kitten Sammy in their perfect peaceful house. So when Gran announces they're going on a big adventure to the city, Maya is scared - she's too small for the city, surely? And what about Sammy? When they arrive amongst the towering grey buildings, Maya discovers that Sammy has followed them! And when he escapes, Maya must face her fears and look after him.