Lydia and Zac are getting married and not everyone is happy about it on the next episode of “Welcome to Plathville.”

“Welcome to Plathville,” season seven, episode eight, airs at 10 p.m. Tuesday, Sept. 9, on TLC.

LIVE STREAM: Fans can watch TLC without cable on Philo , which offers a seven-day free trial; DirecTV , which has a five-day free trial; and SlingTV, which has new, flexible one-day, weekend and week passes.

The episode is called “The Day Before ‘I Do.’”

The synopsis is, “With Lydia and Zac’s upcoming nuptials, discontent grows amongst the Plaths. Kim and Isaac struggle to see past Zac’s red flags. Veronica’s unexpected attendance has everyone on edge, and Ethan makes a dramatic exit.”

In this season of the show, TLC said, there will be “raw emotions, shocking surprise

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