In this sci-fi flick edited down from a TV series, our hero is a Starwolf named Ken (Tatsuya Azuma) from the planet Valnastar. After disobeying orders and accidentally killing his best friend - a fellow soldier, Ken becomes a fugitive alien rescued by the Earth starship the Bacchus 3. The crew of the Bacchus 3 includes alcoholic Captain Joe (Jo Shishido), Rocky the pilot (Choei Takahashi), disco-haired navigator Dan (Tsutomu Yukawa), Billy, and Tammy the ‘morale officer’ (Miyuki Tanigawa). Ken joins the Bacchus 3 team at Captain Joe’s invitation. At first, Rocky distrusts Ken, but later they become friends. And Tammy has an unrequited crush on Ken. Meanwhile, Ken’s friends’s sister Rita, who is also Ken’s girlfriend, is ordered by Valnastar ruler Lord Halkon to avenge her brother's death b