Fisherman Jim and son Rich, who is on a gap year from an astronomy course at Newcastle University, catch the biggest haul of fish they have ever seen. They are joined by a humanoid, very friendly alien who speaks to them directly into their minds, his name is Ekko. Dressed in gloves, overalls, a balaclava and sunglasses, he helps clean and offload the catch along with Jim's friend and fellow trawler owner, Clive, and his crewmen. The...