Narrator: The elephant carcass has brought the pride together, but there's still no sign of Big Toe or Madumo... ♪ and now cameraman Sets has picked up the intruder males, who are on patrol.

Less than 100 meters away are Colin and Nkgonne and one pride female.

Buchanan: Incoming two intruders.

Sets is with them, and there could be an encounter with Colin and Nkgonne.

They seem to be up and moving towards where Gordon has Colin and Nkgonne and the other female.

We might have a conflict because the intruder males don't belong here.

♪ [Growl] So the female has started calling.

Narrator: The lioness is contact calling, trying to find the rest of the Xudum Pride.

[Growls] She's risking alerting the intruder males to her exact location.

Buchanan: They will hear that call, the call of a female, and they may well come this way, not knowing that this female is backed up by two males, Colin and Nkgonne.

[Growling] She's just picked up the volume of that call.

♪ [Growling] ♪ Nthomiwa: They seem to be trotting.

Something seems to be brewing.

An interaction is imminent.

♪ [Growling] Buchanan: So if you can see my vehicle, I'm sitting with the female.

She's up on a termite mound.

The males are coming straight towards her.

Colin and Nkgonne, they're behind me.

Nthomiwa: The intruder males are within 50 meters of the female and probably, like, 70 meters from Colin and Nkgonne.

♪ Buchanan: The intruder's seen the female, but he's ignoring her.

I think he's recognized that there's a bigger lion behind her.

Oh, my goodness me.

These intruders are walking straight into trouble.

What on earth is going to happen?

Colin and Nkgonne are behind me.

Narrator: Colin and Nkgonne might look imposing, but they're only half the weight of an adult male lion.

♪ Nkgonne's moving.

Right.

This is gonna come to something.

Two Xudum boys against two intruders.

OK.

Heads are up.

[Growling] ♪ What's happening?

So are they pulling out, man?

The trouble is at your back.

What are you doing?

Colin and Nkgonne are moving out.

They're pulling out.

Intruders are over here.

They're moving in.

This is an aggressive approach, and Colin and Nkgonne have bottled it.

Nthomiwa: One of the intruder males is chasing Colin and Nkgonne away.

Buchanan: This is the territory that Colin and Nkgonne are not prepared to fight for, at least not with these two guys.

Intruders chasing them out, and they're going.

Off they go off into the distance.

My word.

Who'd have thought it?

Just with the last of the light, I'm seeing that this female is not giving the intruder a warm welcome.

[Growling] I think Colin and Nkgonne, as soon as they got their eyes on these guys and saw how big they were, they weren't taking any chances.

♪