A stray missile from a confrontation between the Galman empire and the Bolar Federation crashes into the sun, turning it into a time bomb of radiation. The Star Force once again sets off into space, this time on a quest to look for a new world for the human race. (Source: ANN)

A year has passed since the Star Force returned to save the Earth but another danger now approaches from deep space. A gigantic White Comet hurtles toward our galaxy, obliterating everything in its path. But it is no ordinary comet—it is the deadly Comet Empire, conqueror of worlds... and Earth is the next target! Against orders, the Star Force blasts off to investigate, but even if they can get past the flagship Andromeda, they don't yet know the true nature of their new enemy! (Source: AniDB)

In the year 2199, Earth is a mere shell of its former glory after a vicious bombardment by the Gamilas Empire. The inhabitants have been forced underground to escape the irradiated surface, but the deadly radiation inches closer and closer to the retreating population. With only one year before complete and utter extermination, time is fast running out and hope is in short supply. So far, any attempt to escape or retaliate has been instantly annihilated by the alien empire—until an emergency transmission from the planet Iscandar in a neighboring galaxy offers a glimmer of hope to save the doomed planet. Covertly, Earth's Self Defense Force constructs a faster than light engine for a journey to Iscandar. Armed with new weapons and a determined crew of fearless navy men, the World War II era battleship Yamato is reborn as Space Battleship Yamato. She and her crew set out on a perilous journey across the stars to save their home and the entire human race. [Written by MAL Rewrite]

Kazuki has been awaiting 10 years for the day when her neighbours moved back to their old house. She has a crush on Yuuji, whom she considers as her first love but to whom she never managed to express her feelings for him before they moved out. Yuuji often comes over to play with Kazuki, Kazuki's older sister Hatsune and Yuuji's sister Marie when they were kids. Her ideal depiction of Yuuji was soon shattered when he turned out more than she had expected, him acting all ecchi during their reunion. With their parents off in South America, both families must learn to live with each other and rekindle the childhood feelings they shared together. Things get even more crazy as they attend the same school. (Source: ANN)