Star Challengers: Space Station Crisis

From two New York Times–bestselling authors, a group of talented young people heads to the International Space Station for a new mission: saving Earth from invasion . . .
 
Now that JJ Wren, her brother Dylan, and friends King and Song-Ye have seen Earth’s dark future—facing an invasion by the hideous alien Kylarn—they know they have to prepare the human race. At the local Challenger Center, the m...