When they got swept away by the water with their bikes, the movie switches to a montage of them getting the bikes transported to their garage. There they tear down the bikes, replace damage parts, do paint jobs. With a full 10 minute part about how they troubleshooted a misfiring issue on one of the bikes and the full rebuild of a carburateur. There’s even a human interest part where they argue over replacing a part, some of them want to replace the part, others want to attempt a repair. Till one of the wraiths shares a story about how they were a kid working on old bikes with their dad and his dad never believed in throwing parts out, he could always repair it. So they contact a necromancer, which revives the dad for him to fix the part with his dad. And then the movie resumes like normal.