When Erza and the others return to the guild, they find that Makarov is out on business, so the punishment will have to wait. In the meantime, Natsu notices a mysterious flier on the request board asking them to solve the meaning of a certain cryptic phrase. However, when he says the phrase, some magic activates. It causes Natsu to trade bodies with Loke, Lucy to trade bodies with Gray, and Erza to trade bodies with Happy. Makarov returns in time to explain that they’ve activated something called Changeling and that they have to fix it within 30 minutes or else it’ll be permanent. Unfortunately, he doesn’t know the method. Levy doesn’t know the method either, but she does do her best to research the writing and try to find a solution. She finally comes up with something right before the 30 minutes are up, but when she tries it, only Lucy and Gray return to normal. What’s more, the rest of the guild becomes affected by the magic too, causing such switches as Mirajane and Makarov.
I would say that episode reeked of anime original material and thus wasn’t that good, but I actually found it really funny. There’s not much in terms of plot, however all the switching was great – it was certainly amusing to hear all the voice actors in different roles – and Happy and Erza in particular was genius and led to some fun Erza fanservice. I wouldn’t mind seeing more of Happy in Erza’s body in the future, though it appears that they’re not continuing with this stuff and instead going to a story about Natsu’s past which apparently involves that girl from the current OP and ED. Hopefully it’ll be the beginning of an arc or mini-arc and not just a one-shot type story.