Sister Wives season 6 live streaming: Kody Brown threatens to walk away from marriage?
Kody Brown and his four wives Meri, Janelle, Christine and Robyn TLC

Sister Wives season 5 returns with another episode this Sunday as the relation between Kody Brown and his third wife Christine remains tense.

Last week the Brown family met another polygamist family, the Colliers of Billings Montana and the Brown patriarch was relieved to find a person who shares his point of view, as his friends think that "he is nuts".

The Brown patriarch had a huge fight with Christine over inviting his high school friend Ken to join the family caravan.

She opposed to the decision as he (Ken) thinks Kody is "stupid" to believe in polygamy.

Then, things take an ugly turn when the father of 17 children threatens to walk out.

"From now on when you're acting like this, I'm just going to walk away," he warned. "I'm not going to have you rattle me to my core."

Kody also accuses his wives of having demonic monthly episodes and added, "I don't mean to be chauvinistic."

Janelle finds Kody's wife bashing unfair and said: "It frustrates me beyond belief when we're reduced to our biology," she said during the last episode.

"There's so much more going on with women than their biology and men are so quick to go, 'three days a month I don't have to do anything because she's on her cycle' — what the hell!"

More drama is expected to unfold when Sister Wives season 5 returns on TLC on Sunday.

Click here to watch the episode's live stream online.

You can also watch the episode online by clicking here.

Sister Wives is a controversial show that documents the life of polygamist Kody, who lives with four wives Meri, Janelle, Christine and Robyn and their 17 children.