François is taking on a new XXL challenge: finding a restorer willing to help him save a historic jewel of public transport. A legendary RATP bus that a whole generation has already ridden: the Saviem SC10 from 1980. Except that for this extraordinary repair, François has no budget, so he will have to find partners for this exceptional rescue. On the agenda: engine restart, injection fault finding, rocker adjustments, installation of a new exhaust, bodywork repair and of course the search for extremely rare parts. The challenge is complex and enormous, will François succeed? Nothing is less certain.