• Kody Brown stars in TLC's Sister Wives with his four 'wives' and children, but only his marriage to first wife Meri was legal.

Kody Brown stars in TLC's Sister Wives with his four 'wives' and children, but only his marriage to first wife Meri was legal. (Photo : YouTube)

"Sister Wives" shocking season finale will air on March 1. Meri Brown will announce a life-changing decision in the next season that can destroy the whole family.

While it has been shown that Meri Brown has already divorced Kody Brown, her legal husband, the TLC series will investigate further into Meri's decision within the two-hour finale. Following this finale, the series will air its "Sister Wives: Tell All," where all of the members of the family gather together to announce their future plans.

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"I did not see that coming," Christine Brown, the third wife revealed in a clip.

"I am afraid this will change the family," Janelle Brown, the second wife confessed.

Kody has legally married Robyn Brown, his fourth wife, while the other two wives are only "spiritual unions".

Meri shared to the other Brown wives that she is to divorce husband Kody, TLC showed. Meri and Kody, then, are shown holding hands while the husband tells the wife, "the word [divorce] is like a shattering glass."

"In the season finale, additional details emerge that add clarity to Meri's decision to divorce Kody and the family's decision to take the additional step of Robyn marrying Kody," the US Weekly released.

Kody has 17 children; 14 of which are his biological offsprings. Three are of his fourth wife Robyn.

"Sister Wives" is set to air its finale on a special time, March 1, Sunday, 8 p.m and will immediately be followed by the "Sister Wives: Tell All" an hour after on TLC channel.