Ninjago, Season 2: Legacy of the Green Ninja

[As the ninja travel back in time to the past…]

Cole:
Where are we?

Zane:
You mean, when are we?

Kai:
Four Weapons. Huh. My parents' shop. Nya and I used to work there. [realizes] Hey, wait a minute, this is the day Garmadon ordered the Skeletons to take my sister. We need to warn them!

Cole:
Whoa, whoa! You heard what Sensei said, we change anything, we change everything.

Jay:
Yeah, I was confused by that too.

Zane:
What he means is, our world is the result of past events that have already happened. If for whatever reason events in our past fail to happen, then the future could radically change.

Jay:
Uh, so what you're saying is we gotta stop Garmadon from changing anything? But of all the times, why did we land here?

Kai:
'Cause this is where it all started. Today, I met Sensei Wu for the first time and I began my training as a ninja. Somehow, Garmadon is gonna try to prevent that, but how?

Cole:
[sighs] If only Sensei were here to guide us.

[They see Past Sensei Wu walking up towards the weapon shop]

Jay:
Oh look, there he is! Maybe he can!

Cole:
We gotta tell him what Garmadon has done.

Zane:
But we can't let the old Kai and Nya see that we talked to him, or else it will affect the future.

Kai:
Hmm. I know exactly what to do.