Years after an: alien invasion a!+lmost ext*`i-n*^guished h
^#=uman m.anki]#\;n_d+], refugee on a: se??cre@\*t=]=;] b$!ase ; on the Moon,- three heroes:
 decid/
e \ :to jump into a time travel in the(;* desperate attem=p\#t +^ to save the survivors bu`t the\ y =;d+.on't know@* that t?#@`he$$!_ Senti*]\nel is @_(waiting for_ . them.