As the world's most pathetic patriarch, Frank Gallagher (Macy) is known for drowning his sorrows with buckets full of booze, cough medicine, rubbing alcohol—basically he'll drink whatever it takes to make his words slur. However, Jeremy Allen White promises that fans are going to see "a new kind of Frank" this season.

Introducing…Sober Frank! At the end of season three, Frank realized that his party-hard lifestyle has finally caught up with him and he needs to eliminate all liquor from his diet. So how is Frank going to curb his cravings? One rule: No more alcohol, just drugs. Way to stay classy, Frank! Macy explains, "His whole goal is to get himself healthy again so he can get back to the bar and back to his life."

Ready for ever more dysfunctional family fun? Of course you are! Take a look above at our exclusive behind-the-scenes trailer for Shameless' fourth season to find out what's ahead for Fiona, Lip and all the rest of the chaotically crazy Gallagher brood.

Season four of Shameless premieres Sunday, Jan. 12, at 9 p.m. on Showtime.