"Ben Is Back" — and it might tear his family apart.

The full-length trailer for the drama debuted today and reveals more of the story than the teaser. Lucas Hedges plays a 19-year-old who comes home from rehab in time for Christmas. His mother Holly (Julia Roberts) is thrilled, but her husband (Courtney B. Vance) and daughter (Kathryn Newton) are skeptical and wary.

Now that he's home, Ben's old life resurfaces and threatens to upend the family's peace. And Holly is forced to confront the reality of having an addict son.

Roberts and Hedges' raw and emotional performances earned them rave reviews at the Toronto International Film Festival, and the movie is likely to do well during awards season. That should once again pit Hedges against his friend/rival Timothée Chalamet, who is also starring in an addiction drama titled "Beautiful Boy."

"Ben Is Back" opens in theaters December 7.