Some nightmares aren't dreams.

After Karla Jaeger is brutally killed in her house by a rogue animal, her son, Eren Jaeger begins to fall into a downward spiral without either of his parents to look after him, as his father, Grisha, had disappeared years ago. But one day, when he visits the house where his mother died, he too is attacked by an wild animal, only to be saved by another.

"We stopped looking for monsters under our bed when we realized they were inside us."

When the World Cup is held in Germany, a hardcore German soccer fan, Eren Jaeger meets the French team's star player, Levi Ackerman.

Levi knew and Eren didn't; They appeared different but their hearts beat just the same.

Levi is the only one left alive, even though he knows he shouldn't be. He lives by himself now, and leans on a cane and a few old memories for support.