 In this episode, on the night of a show, head writer Liz Lemon grows increasingly infuriated when no one seems to remember her 40th birthday.Just before "TGS"s live taping, Tracy Jordan decides to break character, to his co-workers' chagrin.Meanwhile, television executive Jack Donaghy struggles with the consequences of his promise to give up drinking while his girlfriend Avery Jessup is pregnant with their child.