W.I.T.C.H., Season 1

Yan Lin:
The universe was once a single kingdom ruled by good, but evil began to take root. A veil was created to isolate the evil kingdom of Meridian from all other worlds. Without the protection of this veil, every world including Earth is in terrible danger. Meridian has been overtaken by a powerful entity named Phobos, but he is not the legitimate ruler, they believe the true heir to the throne is somewhere here on Earth.

Irma:
Um, I'd like to wake up now.

Yan Lin:
But portals have begun to open in the Veil, doorways through which evil can cross between worlds. There are people called Guardians, whose job it is to close these holes using their powers.

Yan Lin:
I became a Guardian when I was your age, but now the duty is passing to your generation.

Cornelia:
Well, thanks for the snacks.

Yan Lin:
Ah! Ah! Ah!