Gintama movie plot

At the end of the Edo period, mysterious aliens called "Tenren" attacked. As a result, the war between the earthlings and the heavenly people broke out immediately, and a large number of warriors and fighters from the barbarian sect participated in the battle with the heavenly people. After the shogunate saw the powerful strength of the gods, they finally bowed their heads to the gods, gave up the samurai, and signed an unequal treaty with the gods without authorization, allowing them to enter the country. Later, the "Knives Abandonment Order" was promulgated, which took away the samurai's swords and made them powerless to resist. Since then, heaven and man have been rampant and domineering, and the shogunate has been influenced by heaven and man, and even controlled, becoming a "puppet regime". In such times, there was a samurai who happily lived a whimsical life with his companions.