They might be proper grown ups now but their lives are still as drama-filled as ever!

Farrah Abraham, Maci Bookout, Catelynn Lowell, and Amber Portwood are returning to our screens next week for the brand new series ofTeen Mom OG, and it's set to be explosive.

In the first episode,Farrah realises that her relationship with boyfriend Simon is over and proceeds tocall him a "stupid juvenile piece of s**t". And that's just for starters.

While arguing with mother Debra, Farrah's daughter Sophia then HITS her mum in order to get her attention, to which Farrah responds: 'Stop hitting people!'

Things are still far from rosy between Amber and her exGary as well, as they're currently embroiled in a custody battle over their daughter Leah.

Amber asks Gary for joint custody of Leah, who complains that her mum doesn't give her enough attention.

Meanwhile Maci is loved-up with boyfriend Taylor and their daughter Jayde, but the situation with her ex (and Bentley's dad)Ryan is still tense.

Ryan's not exactly winning any Best Dad awards in this episode as hemisses son Bentley's first day of school, which Maci is NOT happy about.

Catelynn and Tyleralso argue about their pre-wedding plans, asTyler wants to go to astrip club for his bachelor party.

Tyler's dad Butch is released from prison and meets his granddaughter Nova for the first time.

And with Butch out of jail,Catelynn realises that Butch (her mum's ex)will now bea constant presence in their lives. What will that mean?

- By Sophia Moir

'The brand new series of Teen Mom OG starts Wednesday, 13 January at 8pm on MTV.'