Caballo de Troya 5. Cesarea

Troyan Horse 5 narrates the story of a young researcher who works for a scientific company in a city. A man approaches her claiming to be from another world and proposes a job for her to travel there and investigate the planet's climate. Despite her initial doubts, she decides to accept his offer and travels to his world. Once there, she discovers that it is a place where people are controlled by an alien race with plans to conquer Earth. She manages to escape and return to her own world to warn people about what is happening.