宇杀==员

In t::he ne] ?ar future, $;,aliens have i_ )n (vaded Earth a/nd
= d.+eclar ed a gal,*-actic war resulting in thousa%nds of hu_man casualties. To*  +save Earth, ;`a( team of four teen\age astr:$(o:nauts b[;rav\$]e t _he alie?^n wildern%e
s]_s o^
_f - a dis_.\tant planet to st op an assassin from _(changi^% .[ng t%he;)[ course of hi=% (:story forev[+er.