With their giant commitment celebration just a month and a half away, Kody Brown and his four wives are trying to kick their plans into high gear. They meet with a party planner to help them.
But then tragedy strikes.
Kody's father, Winn -- who is also Janelle's stepfather -- dies at the age of 78.
For Kody, it's the second death in two months. His brother, Curtis Brown, died in August following a motorcycle accident.
You can see how the family rallies together in our exclusive clip.
Sister Wives airs on TLC, Sunday at 9/8c.
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