Ep 20. Run Silent, Run Deep

The show Martian Successor Nadesico follows the crew of the spaceship Nadesico as they try to save Earth from an alien invasion. In season 1 episode 20, titled "Run Silent, Run Deep," the crew must face a new threat as they hide out underwater.

The episode begins with the Nadesico entering the ocean to avoid detection from the Jovian Lizards, who have been pursuing them across space. As they navigate the depths of the ocean, they come across a group of submarines from the United Earth Federation. The crew of the Nadesico is surprised to see UEF submarines so far from the surface, but they soon learn that the UEF has been conducting experiments on a new type of submarine that can travel undetected through the ocean.

The crew of the Nadesico is intrigued by this new technology and decides to investigate further. They make contact with the UEF submariners and learn that the new subs are equipped with advanced stealth technology that makes them nearly invisible to radar. The Nadesico crew is impressed by the technology and decides to study it in order to improve their own spacecraft.

However, things take a turn for the worse when the Jovian Lizards track the Nadesico to their hiding place in the ocean. The crew of the Nadesico is forced to hide alongside the UEF submarines, using the stealth technology to avoid detection. As they wait silently in the depths of the ocean, tensions rise among the crew as they realize the danger they are in.

Meanwhile, a small group of Jovian Lizards manage to penetrate the UEF's underwater facility, causing chaos and destruction. The Nadesico crew must work together with the UEF submariners to fight off the Jovian Lizards and protect the advanced technology they have been studying.

As the battle rages on, the crew of the Nadesico begins to understand the true significance of the UEF's new submarines. With their advanced technology and stealth capabilities, the subs could be a game-changer in the war against the Jovian Lizards. The crew of the Nadesico realizes that they must do everything they can to help the UEF protect this technology and prevent it from falling into the wrong hands.

In the end, the Nadesico crew is successful in protecting the UEF's new submarines and defeating the Jovian Lizards. However, they also realize the importance of staying one step ahead in the war against the aliens. This episode highlights the importance of teamwork and innovation in the face of adversity, as the crew of the Nadesico and the UEF work together to protect the future of humanity.