Cylons suddenly demanded a peace agreement through the diplomatic channels of Count Baltar, a human parliamentarian. Human leaders and fleet commanders are complacent and relaxed about the Cylon peace agreement. All human warships, including twelve motherships named robotech, were invited to participate in the armistice negotiations to complete the final step of the peace agreement. This is actually a scam-Bart betrayed mankind in pursuit of personal rights and glory, and the cylons did not really plan for peace.
The commander of Galactica, Adama, doubts the cylons' motives. He ordered two of his best pilots, Apollo, Adama's eldest son, and another to carry out regular patrol missions. Zack, Adama's other son, persuaded the second pilot to let him go. This patrol found many hidden Cylon fighter squadrons, and they were also found. Cylons jammed their communications on the patrol's way back to the galaxy. Isaac's fighter plane was hit and slowed down, which forced Apollo to leave him as soon as possible to warn the fleet. The cylons killed Apollo before he came back to help Isaac.
Despite the restraint ordered by the President, Adama was able to put the galaxy into a state of readiness before the Cylon fighter brigade launched an attack, but other war stars could not. As a result, most of the fleet was raided and wiped out. During the war, Apollo told Adama that he found cylon fighters loaded with fuel tanks. Adama understands that their purpose is to expand the attack range of Basestar fighters. He ordered the galaxy to retreat in order to defend its home Caprica in time. But it's too late. When he got home, he found only the ruins ravaged by the cylon base ship. Adama later learned that all twelve colonies had the same fate. After destroying human colonies, these base ships continued to "armistice talks" to destroy the remaining war planets.
Colonial civilization is facing destruction, and the Cylons continue to exterminate mankind. Adama, gather all the ships that can be launched to escape from the Cylons. The only hope is that the Milky Way can protect this fleet as long as possible, so that they can find the legendary 13 human colony-the earth. Maybe the earth has enough technology to defeat the cylons. According to legends and myths, this colony is only known to the last nobles of Kobo. The planet Kobolds was abandoned as early as 1000 years ago when human beings explored outer space on a large scale.
Adama's search for the earth was assisted by Colonel Tai, the first mate of the Galaxy, and the squadron of viper pilots led by Apollo (Adama's only son), Starbuck and Boomer. Cylon leaders contemptuously harbored a short-lived and useful traitor Bart and decided to execute him. In the movie, Bart was beheaded. However, in the TV series, the death penalty was suspended before beheading, so that he could help the Cylons hunt the remaining human beings.
The exile fleet, composed of the Milky Way galaxy and the fleeing spacecraft, got a short respite around the holiday planet Carrion. However, the purpose of the indigenous Orviets on the planet Khyron is actually to contain people, so that the Cylons can gather their forces to destroy the human fleet. Obi-Wan used this situation to kidnap the crew and passengers of the refugee fleet for food. Apollo and Spock discovered the plot while investigating the disappearance of their partner. After rescuing their imprisoned partners, Apollo and Spock ignited the titanium mineral deposits buried under the planet when they exchanged fire with the Cylons.
At the same time, the new parliament believes that the cylons have been left far behind, so it insists that we should take the opportunity to hold celebrations. Parliament arranged parties and awards banquets, requiring all fighter pilots to attend, and a frank member even asked not to carry weapons, completely ignoring the cylon threat. The cylons thought that all the fighter pilots attended the award banquet on Kellogg, so they launched a fighter attack on the orbiting galaxy. However, Adama and Tai had long suspected that this was a trap, so they arranged the ground crew to pretend to be most fighter pilots. The real pilots are on standby, successfully repelling the cylon fighters.
Apollo once again knew that cylon fighters could not sail without supply ships. Apollo and Spock went to hunt these other ships, and then they found a Cylon base ship on the back of Kailelong. After disobeying Commander Adama's return order, Apollo and Spock decided to try to destroy it so that the refugee fleet could escape the pursuit. They used radio communication to trick the Cylons into thinking that a large number of squadrons of vipers were coming to attack. The cylon ship descended into Kellogg's atmosphere to avoid being discovered, but was destroyed by the fire net when it exploded Kellogg.
Despite the victory, humans realized that the Cylons would continue to pursue them, so they embarked on a "lonely exploration journey to find a shining planet with the name of the earth".