Of unknown reasons the second hollow form of Ichigo ends up in Equestria and gains slight memory loss (not like he had much to lose anyway for a mindless beast). Even with loss of whatever memory he had he is still extremely dangerous and is really confused.

(Just thought I'd make a Bleach crossover since I've seen a lack of them lately.)

*UPDATE2*
Forgot to mention this takes place right before the end of season 2 so expect some changeling ass-kicking.