Showtime has released new poster art and official trailer for season seven of its number one comedy series “Shameless.”

In case you missed the last six series…the show depicts the dysfunctional Irish American family of Frank Gallagher, a single father of six children. While the hapless matriarch spends his days drunk, his kids learn to take care of themselves.

The seventh season picks up a month after last season’s finale, with the Gallaghers ready for another sizzling summer on the South Side of Chicago. The Gallaghers have always scraped by, but this season finds some of them finally getting a leg up, with more changes than the currents of the Chicago River. When Frank (Macy) awakens from a coma to learn that his loved ones tossed him in the river, he declares war – Gallagher vs. Gallagher. But Fiona (Rossum) is too busy improving her own life to worry about Frank's.

After last season’s devastating betrayal, she's now moved on, a warrior, and nothing is getting in the way of her new life as manager of Patsy's – including her family. Gallagher Golden Boy Lip (White) finishes up his time in rehab, and emerges with a new outlook on alcoholism and a grim vision of his future, whereas the once-unstable Ian (Monaghan) is now thriving as an EMT and in a comfortable relationship. Debbie (Kenney) is still figuring out how to be a good mom to young Franny, while Carl (Cutkosky) has some big decisions to face as he enters manhood. With Fiona's new determination to make something of herself, will the rest of the Gallaghers fall apart without Fiona there to pick up the pieces?

“Shameless" will premiere on Sunday, October 2 at 9 p.m. ET/PT.

Showtime releases official trailer and new poster art for “Shameless” season seven.