Gildarts Clive & Laki Olietta's Infiltration

Gildarts Clive & Laki Olietta's Infiltration is an event taking place in the Key of the Starry Sky arc in which Gildarts Clive and Laki Olietta find a young comatose girl who appears to be the true Michelle Lobster when they were investigating a Church.

Prologue
After the Fairy Tail Mages discusses about Legion Corps that recently attacked them, Macao and Wakaba are seen personally requesting Gildarts to do a job for them. When Gildarts accepts to do it, Wakaba concludes that they couldn't ask anyone but him to do a job as dangerous as this and Macao tells him that they'll partner him with the right person. When Gildarts sees Cana overhearing their conversation, he asks her if she wants to a father-daughter trip with him, only to be rejected by her. Gildarts becomes sad and walks away as Cana yells at him for not being in a hurry.

Gildarts later partner with Laki and they arrive at the Lobster Plantation as they look at the abandoned town from a distance. They walk through the abandoned town talk on how prosperous the town used to be and Gildarts concludes that years have passed since anyone lived here. Laki then says that this is Michelle's hometown, Lobster Plantation.

Infiltration
Gildarts and Laki later stands outside a mysterious abbey where a nun did not allowed them to enter when Gildarts asks for entry. When refused entry, Gildarts asks Laki to carry out a plan that he has in mind. With the help from Laki's Molding Magic, they sneak into the place through the wooden beams where Gildarts accidentally gives away their location.

After being discovered, the nuns and priests in the abbey began to crowd around Gildarts and Laki in a zombie-like fashion. This causes Laki to use Wood-Make: Heart's Sense of Distance to block the nuns and priests from getting closer to them and Gildarts punches them. But they still continue to make their way by climbing on the wood wall.

This causes Gildarts to get angry and use Disassembly Magic on them that seemingly kills them. Laki then asks him why he was so harsh with them, but Gildarts points out to look carefully that they aren't human. Laki realizes that the nuns and priests are dolls made of wood. This makes Gildarts question that what is Zentopia up to. He later says that Macao was right about the place being suspicious. Gildarts and Laki then proceeds to the back of the abbey while defeating the dolls.

After Gildarts and Laki defeats all the dolls, they found a young comatose girl attached to a Lacrima, lying unconscious. Laki reads the reports and says that the girl was on a major accident several years ago and she was receiving treatment here. When Gildarts asks what her name is, Laki says her name "Michelle Lobster" that surprises both of them. Laki then says that she lost her family in an accident at the Lobster Plantation and she is their only daughter. Gildarts then wonders who is the girl with Lucy is.

Aftermath
After Gildarts and Laki found the real Michelle Lobster, they took her outside from the abbey and Laki informs Warren and the other Fairy Tail Mages that the "Michelle" with Lucy is an imposter. After then, they took the unconscious girl to a nearby hospital.