Young cabin steward Sid is proud to be working on the Titanic the greatest ship ever built. Clara dreams of adventure too but she's a stowaway in the hold of a much smaller boat Carpathia. Here she meets the biggest best dog she's ever known: Rigel who is on his way to be reunited with his owner. None of them could have imagined how they would need each other one ice-cold terrible night - or that an extraordinary sea creature might also answer their call. . .