Star Blazers Series 1 : Quest For Iscandar 5

After a devastating nuclear attack, the people of Earth have begun living in underground cities in order to escape radiation poisoning. The radiation is seeping deeper into the planet, however, and will soon contaminate the cities if it isn't stopped. Now the battleship "Yamato" has only one year to make a 148,000-light-year trip to the planet Iscandar and back in the hope of returning with a neutralizer that will dissipate the radiation and save humanity. ~ Cammila Albertson, Rovi.