“Imagine alien visitors arriving on Earth in the remote future.” Jan Zalasiewicz’s The Earth after us, and the seminal Lynn Margulis’ Microcosmos inspired this mockumentary (e.g. the voice over, a re-adaptation of them, where past tense verbs are turned into future tense, embedding the fantasy of a future already set as past). The idea that symbiosis, the living together and sometimes merging of different species of organisms, is crucial to the evolution of life forms on Earth, is the underpinning concept of this work.