AU, Chuck, and his sister Katie are both astronauts sent to Planet 51 to document the apparently uninhabited exoplanet, neither expect that there is already any complex life forms already living there, things are made yet more complicated when the two get separated. (Full summary inside)
Después del beso con Neera, Lem no siente lo mismo, y lo único que le cruza por la mente es aquel baile donde el astronauta casi roza sus labios con los de él. Ahora, en el espacio exterior, Lem intenta enfrentar a ese extraño humano.
Sonic, Shadow, and Silver landed on Planet 51. But, the problem is: they're missing a chaos emerald. Where will the last chaos emerald be? And who will find it first?