Season two dives headfirst into the sweltering heat of a Chicago summer, grabs Gallagher family life by the throat, and never lets go. Boozed-up Frank's scams constantly fizzle. Grammy Gallagher visits after a prison stint. Bipolar Monica returns to fan Frank's flames. Fiona plays the field--until Steve comes back with a hot new wife. Lip drops out to care for his and Karen's baby. Ian's gunning for West Point.