A bad day causes Penny to reevaluate her life choices – including Leonard. Meanwhile, Howard and Bernadette struggle to care for Mrs. Wolowitz, and Raj gets relationship advice from Sheldon.
When Frankie has his first taste of alcohol and Rachel wants to go on birth control, Joanne and Jack are left at odds.
Mary teams up with Catherine to deal with Henry, whose deranged behavior puts Francis at risk. Elsewhere, Bash resolves to destroy the Darkness after meeting a boy who survived the horror; and a devoted Lola tries to protect Julien.
Mr.Porter enters a cake competition and needs Ryder and the pups to help him bake the biggest and tastiest cake. The race is on to get their cake baked and to the competition on time!
Bernice and Davy attempt to repo an elusive yacht. Eddie has a shocking experience with an electronic billboard truck. Kosgrove unwittingly agrees to a drastic life change. Jerome visits Wanda in Atlanta for the first (and last) time.
Elizabeth makes a shocking discovery about Kate. Philip pursues a contact for information about stealth. Stan continues his pursuit of the illegals.
Rayna organizes a charity concert at Fort Campbell after finding out Luke has been injured in Afghanistan, forcing him to cut his tour short. Deacon and Maddie are brought closer together as they chart a new course for their future. Teddy is beginning to feel like his family is slipping further and further away from him. Juliette is racked with guilt knowing that her back is against the wall after Jeff threatens to go to Avery with the truth. Gunnar is feeling pressure to reveal a secret about Juliette to Avery until Zoey urges him that his professional and private life should be kept separate. And Will and Layla begin shooting their new reality series.
Chef Robert Irvine celebrates the show's 100th episode by offering a glimpse at what goes on behind the scenes. Included: interviews with the people who make the makeovers possible; and a look back at the dirtiest kitchens.
A tragedy sees Debbie taking some drastic action. Judy manages to surprise everybody at Pam's 40th birthday.
Frankie limits the hours during which the kids can voice their needs; Mike watches to make sure Darrin doesn't take advantage of Sue; Brick invites new friends over.
Shumway secretly orders one of the 100 to kill Bellamy. Meanwhile, hallucinogenic nuts provide Octavia with an opportunity to help the Grounder escape the camp, and Bellamy and Clarke investigate a nearby underground depot, where they find military weapons.
Truman, empowered with new authority from the President, launches a mustard gas attack designed to kill Miles and Monroe. To Rachel's disappointment, Miles agrees to join Monroe in a ruthless plot to beat the Patriots at their own game. As Neville faces his own challenge from the Patriots, Aaron grows increasingly alarmed by the power of the nanotech.
Riley is looking forward to meeting Philip’s sister from England, but her excitement soon vanishes when it becomes obvious that Georgie is less than impressed by her brother’s taste in girlfriends. Danny’s contract negotiations are in jeopardy when Bonnie tangles with the Rangers’ new general manager, Valerie.
David, Gill and their son Freddie hope Noel Fitzpatrick can help their Labrador Scooby, who has a life-threatening tumour in his leg. The vet goes to extraordinary lengths to save the life of Tiger the cat after his heart stops during his recovery from an operation, and when a lurcher called Otis brought in with shotgun wounds, Noel must extract the bullet before working out how to save the animal's leg. Plus, will a pair of tights help a French bulldog walk again?
Hannah and Tom have happy news, and Derek's dad Anthony goes on a date with Tom's nan. But matters of the heart are taking a downward turn for Kev, who calls on his brother Cliff for help.