When a Mimetic Beast attacks Cosmo Base, Lou Roux is forced to escape in the Cosmo Diver as her father Lowe sacrifices himself. Lou crashlands on a mountain with the Cosmo Diver and is taken to Dannar Base. Lou has to avenge her father's death when Cosmo Base is about to reenter the atmosphere.
Tropes in this episode:
- All Your Base Are Belong to Us: This time around, Cosmo Base gets destroyed by the Mimetic Beast.
- Big "NO!": Lou yells one when Hal is killed in the shuttle's destruction and does it again when she later realizes that Lowe is dead towards the end of the episode.
- Bittersweet Ending: Cosmo Base is saved and Mira finally awakens from her coma, but Hal and Lowe are dead and the base is significantly damaged.
- Break the Cutie: Lou falls into despair after her uncle Hal and her father Lowe are killed.
- Call-Back: The Dannar Base crew tell Goh that he must be tired, which is what they said back in the second episode.
- Cry into Chest: Lou cries into Kiriko's chest as the latter assures to Lou that she would pray for Lowe's safety.
- Despair Event Horizon: Lou falls into despair for most of the episode, especially after learning that Lowe and Hal have died.
- Dying Moment of Awesome: Lowe bravely takes on the Mimetic Beast invading Cosmo Base to cover for his daughter. However, it results in his death.
- Heroic BSoD: Lou falls into one when she is forced to escape Cosmo Base with the Cosmo Diver and snaps out of it by the end of the episode.
- Heroic Sacrifice: Lowe stays on the space station to attack the Mimetic Beast, allowing Lou to escape to Earth unharmed before he is consumed by the station's explosion.
- It's Personal: Lou wants to avenge her father after the latter is killed.
- I Will Wait for You: Lowe tells Lou to wait for her on Earth after sending her and the Cosmo Diver to Earth. Unfortunately for Lowe, he has to do a Heroic Sacrifice.
- Killed Mid-Sentence: Hal tells Lou that she is getting really good at observations, but gets blown up mid-sentence when the Mimetic Beast destroys the shuttle.
- Mass "Oh, Crap!":
- The Cosmo Base crew when the Mimetic Beast destroys the shuttle in The Teaser.
- The Gakazono High students when the Cosmo Diver crash-lands on Earth.
- The Dannar Base crew when they realize that Cosmo Base's engine section is going to reenter the Earth.
- Oh, Crap!:
- Lou can only watch in shock as Hal and the shuttle's passengers are killed in The Teaser.
- Towards the end of the episode, Lou has a similar moment upon realizing that Lowe sacrificed himself to cover for the base's crew.
- Parental Substitute: Anna and Goh become parental figures after Lou avenges Lowe's death.
- Popping Buttons: The buttons on Kiriko's outfit burst open just before Goh and Lou use the Cosmo Diver to launch into space.
- Roaring Rampage of Revenge: Lou goes on one after she realizes that her father sacrificed himself.
- Screw This, I'm Outta Here: The Cosmo Base crew are forced to escape when the Mimetic Beast attacks the station.
- Shoo the Dog: Lou gets separated from Lowe since he doesn't want to risk her daughter getting injured.
- Title Scream: Beginning with this episode, Goh and Anna yell out the series title.
- Wham Shot: Mira awakens from her Convenient Coma at the very end of the episode.
- You Shall Not Pass!: Lowe holds the Mimetic Beast back after forcing Lou to escape in the Cosmo Diver. He pays for it with his life.
