Bastien Bonlivre is in trouble again. His sworn enemy, Olivier Odieux, has escaped jail and is after Bastien once more.Meanwhile, trouble is also brewing in Paris. Fires are burning, and danger lurks at every corner. Who could be behind this?As clues start piling up, Bastien and his friends Theo, Alice and Mathilde must set off on a risky treasure hunt to track down the answers they so desperately need. Because if they don't find them, it won't just be Bastien who is in danger...
