Stick uses binoculars to spot the Inbit fortress along the mountain and comments that there’s no cover once they leave the forest. The area is also patrolled by three Eagers in the air, while inside the base there are 100 Eagers and Grabs. Yellow notes that the Inbit are undermanned for one hour during the morning patrol. Stick points out that the biggest problem will be the Inbit’s HBT-detecting radar, and Ray yells timber for a falling tree. Houquet yells at Ray, and Mint hits him over the head with a piece of wood. After building a fire, Ray suggests skiing to get by undetected, and Stick says that if they destroy the radar, the Inbit won’t be able to call for backup. He thinks it’s possible if they attack during the hour when the fortress is undermanned. Mint wonders if she can learn to ski, and Ray jokes that the guys from Mars and the pretend tough girl wouldn’t know how. Houquet says she doesn’t want to be ordered around, and Aisha suddenly experiences a severe headache. Ray wonders what happened to her, and Houquet says she must be having memories of horrible experiences. The next day, everyone gets into position for the attack, starting with Ray and Mint on wooden skis. Mint starts to show off and nearly loses balance, but Ray straightens her out. They manage to reach the forest just before some Eagers land. The Eager picks up a pair of Mint’s panties wrapped around a bomb and then drops the bomb, but nothing happens. Ray and Mint return to their mission and begin climbing up a rope to a cave entrance. An Eager flies near them, but they escape notice and instead nearly stumble into a Grab patrolling the base entrance. Ray and Mint enter the creepy looking base and barely avoid a Malar patrol. Mint accidentally opens a door leading to an interior chamber filled with hibernating Grabs. Ray tosses a coin at one of the Grabs, but it doesn’t wake up. They follow as a hibernating Grab is transported to another location. A Malar supervises as the Grab is opened and filled with an Inbit lifeform. Ray says that must be the thing inside the Grab, and Mint says they have to find the HBT-sensing radar soon. Ray agrees, but points out that they don’t know what the radar looks like. Yellow picks up on binoculars a mirror signal from Mint that they couldn’t find the radar. Houquet then takes off in her Bartley to help out and is immediately picked up by several Eagers. A brain-looking thing inside the base begins to glow, and Ray realizes it must be the HBT radar.
Ray and Mint move around inside the room, which is occupied by three Malars. Ray pulls out the bombs from Mint’s backpack and puts a one minute timer on them. Mint notices that she left her cap behind and trips, which gets the attention of the Malars. The Malars walk toward them and are caught up in the explosion. Aisha screams out from another headache and mentions sound. The brain-like substance begins to float toward Ray and Mint, so Ray shoots at it. The three Legiosses and the TLEAD take off and are immediately detected by the Inbit. The sticky brain substance begins to stick to Ray and Mint. The Legiosses and TLEAD engage the Inbit in the air while Jim and Aisha drive on the ground. The Legiosses blast their way into the base, and Stick finds Ray and Mint covered inside the brain goo. Ray runs into the next chamber and fires at a large pod. Aisha experiences another headache, and Jim wonders if this is the sound she’s hearing. Houquet reports that the patrolling Inbit are on their way back, and Stick tells everyone to evacuate. After everyone boards their machines, Stick tells them to break through while he holds off the Inbit. Ray wonders if Stick is going off to die, and Yellow says they should just do what Stick wants for now. Stick opens fire on the returning Eagers and leads them on a chase through the base. He kicks away two Grabs blocking the path and finds himself in the fort’s powerplant. Eagers approach from both sides, Stick lures the Eagers near the energy core before firing missiles at it. The core explodes and destroys the Eagers as Stick escapes. Everyone else escapes just before the base’s gate closes, but Ray worries about Stick. Stick reaches a dead end while searching the the exit and fires his last missiles to blast out of the mountain. The Inbit fort continues to explode and crumbles into pieces. Later, Mint and Houquet take a dip in a lake. Ray wonders how Aisha heard the Inbit, and Stick says they were communicating through telepathy. Mint invites Aisha to join them in the lake, so Aisha strips off all her clothes. Yellow tells Ray that it’s rude to stare, but Ray answers that he can’t keep his eyes off Aisha.
Although Mospeada is about a continuing journey, most the episodes have self-contained stories. This time, the team is trying to cross the mountain that they obtained a map for in the last episode. With an Inbit fort in the way, Stick devises a plan to destroy their HBT-sensing radar. It’s up to Ray and Mint to infiltrate the fort, and they learn quite a few things about the Inbit. First, mecha like Grabs are piloted by lifeforms encased in a green sphere. Second, the HBT-sensing radar is a weird brain-looking thing that can float around and attack if exploded. The guys start to realize that there’s a connection between Aisha and the Inbit beyond what they had originally assumed. Illustrating her complete unawareness of human customs, Aisha strips naked in front of all the guys to go swimming with the girls. It’s not a bad bit of fanservice for the early 80s.