During the ongoing war outside of Earth's solar system, one of the ships mistakenly warps to Earth's atmosphere, heading directly for the Argo's location. The Earth Defense Force alerts Commander Wildstar, who sends the Cosmo Tigers to investigate. The ship attacks the Tigers, but they dispatch it.

Wildstar briefs his crew on the mission, offering those who wish to remain on Earth a chance to leave. Chief Communications Officer Homer Glitchman is the only one who does so, wanting to find a girl who had given him a flower, but whose name he didn't get. Derek discovers that the girl in question is Wendy, the EDF's commander's granddaughter, and sends out the Cosmo Tigers to bring Homer back. Just then, he finds Homer still on board and brings him back to meet Wendy, who wishes him luck.

As the Argo launches into space, 329 days remain before the sun destroys Earth.