Thanks to the Thunder

The first thing he was going to do when they got back to Paris was get d'Artagnan a new horse. This one could obviously not be trusted. A response to the first prompt given to me by rouldehadleyfraser on tumblr: d'Artagnan and Athos get separated from the other two in a thunderstorm and d'Artagnan takes a nasty fall and gets a concussion and Athos has to get them both to shelter..