Engang levede mennesker og rumvæsner adskilt. Nu samles de om fodbold. Efter sejren mod Neptun rejser hold Jorden til Mars. Anden kamp i Solsystemsmesterskabet skal spilles, men drengene udfordres af Mars’ klima, der er meget anderledes end Jordens. Kan Ronni-Romario og hans holdkammerater besejre de hornede rumvæsner fra Mars?

After beating Neptune, Team Earth travels to Mars. The second match of the Solar System Championship is going to take place, however, the boys are challenged by the climate of Mars which is very different from that of Earth. Will Ronni-Romario and his team mates be able to beat the horned aliens from Mars?