The Queen and Mr Brown are on their way to the museum for another mystery tour and it is pouring with rain. Mr Brown hates London in the rain! Inside Conkerdor they learn that they will travel to the middle of the ocean and descend to the bottom where there is no light at all, to meet an Anglerfish, the ugliest fish in the sea. On their way down they meet other strange creatures. When they finally meet the Anglerfish it is different to what they had imagined and it tells them a tragic tale. There is a problem with Conkerdor’s heating system and they are rescued by a whale who takes them to the surface. They return immediately to the museum feeling shocked and shaken. Mr Brown is relieved to be back in London and he now even loves the rain. And the Queen has a great story to tell her grandchildren.