Mel asks Merlin if what the lake has said is true and that if she's truly been trying to resurrect chaos by tricking the sins. Merlin seems to agree and Mel says that doing this is way too uncertain and they're not even sure Chaos exists nor have they ever met it. Merlin says they have though and that they've ridden atop of it and that she (Hawk Mama) too is awaiting the resurrection of chaos.
Hawk Mama then deflates and people get confused. Merlin says that Hawk Mama never truly existed in the first place, but was in fact just a seal that the DK and SD used to seal chaos. (So apparently hawk mama isn't the mother of chaos, but rather was just holding the power). King even says Hawk mama isn't alive, but is just an empty shell.
With hawk mama now disposed of, Arthur asks where the contents of the shell are and Merlin says they have no been transferred into Arthur. So supposedly, chaos lost its true form and ability to use its power and I guess thats why it needs Arthur. Arthur is surprised that this power is now in him and Mel says Arthur should give it up if he wants to. Mel tells merlin to undo this, but Merlin says chaos has chosen Arthur. They begin to argue and Arthur tells them not to. Arthur then goes on some monologue but in the end says hes probably gonna try and bring about a new world. Cath reappears and Arthur is glad to see him. Merlin however says to keep Cath away from Arthur, but Mel is too slow and Arthur loses his arm. (I ain't seen Escanor cry when he lost his arm tho...). Anyway, Cath went insane, but I can't translate why he did.