The world is left in tatters after a sudden, unprovoked and unexplained invasion by aliens, leaving the planet’s remaining human population to fight for survival against the occupiers. History professor Tom Mason has been named second in command for the 2nd Mass, but his real focus is on his three sons, one of whom has been captured by the aliens for an unknown purpose.
With Sansa's life in danger, Ned makes a fateful decision. Catelyn brokers an unsavory deal with the slippery Walder Frey. Tyrion acquires a mistress and is forced by his father to fight on the front lines. Robb wins his first major victory and captures a prized prisoner. Jon is rewarded for his valor and discovers a dark secret about Maester Aemon. As Drogo's wound festers, Dany defies her bloodrider Qotho and puts her trust in the enslaved witch Mirri Maz Duur.
Explaining that the future of the Lannisters is at stake, Tywin presses Jaime to “be the man you were meant to be” as they prepare for battle. Ned confronts Cersei about the secrets that killed Jon Arryn. With the fate of the missing Benjen very much on his mind, Jon takes his Night’s Watch vows, though not with the assignment he coveted. After Ser Jorah saves Daenerys from treachery, an enraged Drogo vows to lead the Dothraki where they’ve never gone before. An injured Robert takes pains to ensure an orderly transition at King’s Landing.
Robin and Barney bond when they intervene in Ted’s relationship, and Marshall and Lily watch a ticking clock as he fears that he soon will be the victim of food poisoning.
Jay advises a dog trainer, while Phil and Claire switch parenting duties to the kids’ chagrin. Mitchell has an extra Lady Gaga ticket when Cameron ends up sick.
After learning that Axl text-invited the wrong girl to prom and plans to solve the situation by standing her up, Frankie and Mike demand that he meet the girl face-to-face in a timely manner to gently break off the date – or face the music and take her to the big event. Meanwhile, Sue and her friend, Carly, try in earnest to fit in with the school’s “B” crowd during lunch, and after a successful first show, Brick begins to bore Frankie and Mike with his impromptu one-man plays.
When Ted is faced with an important decision that might affect his future with Zoey, the gang expresses their true feelings about her.
When a prison guard is stabbed to death outside of a jewelry store, Patrick Jane suspects one of the guard’s inmates is the killer. Meanwhile, Rigsby questions his own father about the murder.
Sarah and Holder intensify their investigation on a suspect’s family and friends. Gwen and Richmond disagree over strategy for the next debate with the mayor. Meanwhile, Rosie’s funeral takes place and Stan concentrates on his own investigation into her death.
Patrick Jane’s life just got complicated. He’s presented with two robberies gone bad and one of them involves Donny Culpepper, a former suspect, who Jane hired to get into LaRoche’s house.