A seemingly utopian paradise is shattered by murder, forcing an archaeologist to uncover the dark secrets beneath its perfect surface. The Doctor has brought his companions to a world of artificial perfection, a sun enclosed by a sphere where want, poverty, and violence are nonexistent. While companions Chris and Roz explore this new world, with Chris finding love and Roz suspecting an alien conspiracy, archaeologist Bernice struggles to find her place in a society that seemingly has no need for her skills. However, the peace is brutally broken by a murder, and Bernice must use her expertise to unearth the buried secrets of this manufactured Eden, while Roz confronts the hidden dangers that lurk even in paradise.

The premise of a utopian society disrupted by murder suggests a narrative that balances exploration of an advanced world with a compelling mystery. The focus on Bernice's archaeological skills implies a unique approach to problem-solving within the science fiction setting. The inclusion of companion dynamics hints at character-driven plotlines alongside the central conflict. This setup promises a story that probes the darker aspects of seemingly perfect environments and the human (or alien) capacity for deception.