If they don't want to be disqualified, the Roughstone kids' team will have to be joined by two new members. It doesn't look difficult, but someone tries to sabotage them and opens a strange interdimensional hole from which come all kinds of creatures: Cro-Magnons, dinosaurs, Middle Ages knights... If the team wants to survive this new adventure, they will have to play the best game of their lives.
Chaos and fun! Join the astroball, the coolest sport, where humans and aliens compete in stadiums throughout the whole galaxy!