Meredith finds out the man she loves has had a secret wife the whole time. She didn't think it could get worse than that, until she makes friends with Mark Sloan. / This is set s2 e01, if Mer met Mark early. It won't be following the plot of the show. It may not seem like it at the beginning, but this is MerDer endgame ! trust. Mer will go darrrrk at some point.