The submarine crew manage to escape from 'squid thingies' and enter some sort of underwater structure. Making their way inside they encounter people covered in strange vines until they discover Christine Chapel's friend, Jinare, covered in the same vines and seemingly possessed by some entity. In orbit, Nyota Uhura manages to decipher an ancient symbol. It states the planet is a prison for the entity. It then detects the Enterprise and sends multiple ships to intercept. The robot, D-6... is annoying. It feels like a character from a completely different show... like a Marvel character... full of quips that are supposed to be funny or endearing but fall flat. Our actual Star Trek characters also feel off... like they were written by someone who has only seen a handful of Star Trek: Strange New Worlds episodes. Scotty especially feels very ADHD. five out of ten.