Our young time-travellers have once again pedalled backward from the future! This time, they land several years beyond their present, though not as far into the future as during their previous adventures - even if climate change already seems to have wiped out much of humanity... Back in the dangerous amusement park they know all too well, Piero, Sara, Mei, Arnold, and Driss - without Luna, but with a new recruit: Arlette - discover that a full-blown revolution is underway. Humanity has decided to take a stand against Apzon and other monopolistic energy conglomerates that have become de facto rulers of the planet. Unfortunately, Apzon is preparing to unleash its robotic troops on the insurgents - because to the multinationals, the idea that water and other highly profitable resources could become shared, public goods is simply unacceptable. This is the final stand for our modern, inclusive, eco-conscious "Famous Five" from the future!