A Clash of Kings by George R. R. Martin

A Clash of Kings is the second of seven planned novels in A Song of Ice and Fire, an epic fantasy series by American author George R. R. Martin. It was first published on 16 November 1998 in the United Kingdom, although the first United States edition did not follow until March 1999. Like its predecessor, A Game of Thrones, it won both the Locus Award (in 1999) for Best Novel and was nominated for the Nebula Award (also in 1999) for best novel.
The second book in the "A Song of Ice and Fire" trilogy. Sansa Stark is trapped in marriage to the feeble Lannister boy, child of incest, who is King Joffrey. In the North the Starks prepare for battle with the Lannisters.
A Clash of Kings picks up where A Game of Thrones ended. The Seven Kingdoms of Westeros are plagued by civil war, while the Night's Watch mounts a reconnaissance force north of the Wall to investigate the mysterious people, known as wildlings, who live there. Meanwhile, in the distant east, Daenerys Targaryen continues her quest to return to and conquer the Seven Kingdoms. All signs are foreshadowing the terrible disaster that is to come.
The civil war to claim the Iron Throne becomes more complex. Three kings had declared their claims in A Game of Thrones: Joffrey Baratheon, Renly Baratheon, and Robb Stark. Balon Greyjoy declares himself king of the Iron Islands, launching a massive assault along the west coast of the North, and becoming the fourth of the war's kings. (Summary by Wikipedia)

A Feast For Crows by George R. R. Martin

A Feast For Crows is the fourth of seven planned novels in A Song of Ice and Fire, an epic fantasy series by American author George R. R. Martin. The novel A Feast For Crows was first published on 17 October 2005 in the United Kingdom, with a United States edition following on 8 November 2005.
The War of the Five Kings is coming to an end. Robb Stark, Joffrey Baratheon, Renly Baratheon, and Balon Greyjoy are all dead, and King Stannis Baratheon has gone to the aid of the Wall, where Jon Snow has become Lord Commander of the Night's Watch. King Tommen Baratheon, Joffrey's eight-year-old brother, now rules in King's Landing under the watchful eye of his mother, the Queen Regent Cersei Lannister. Cersei's father Tywin is dead, murdered by his son Tyrion, who has fled the city. With these two men gone, as well as no longer having to deal with Joffrey, there are no more checks on Cersei and she is essentially Ruling Queen of the Seven Kingdoms in all but name. Now that Cersei finally stands at the height of power and her enemies are scattered to the winds, in a grim irony it quickly becomes clear that she is incapable of wielding the power she has killed and manipulated so many to acquire, and she spirals into self-destruction.
Meanwhile, Sansa Stark is still in hiding in the Vale, protected by Petyr Baelish, who has secretly murdered his wife Lysa Arryn and named himself Protector of the Vale and guardian of eight-year-old Lord Robert Arryn... (Summary by Wikipedia)

A Storm of Swords by George R. R. Martin

A Storm of Swords is the third of seven planned novels in A Song of Ice and Fire, a fantasy series by American author George R. R. Martin.
A Storm of Swords picks up the story slightly before the end of its predecessor, A Clash of Kings. The Seven Kingdoms of Westeros are still in the grip of the War of the Five Kings, with the remaining Robb Stark, Balon Greyjoy, Joffrey Baratheon, and Stannis Baratheon fighting to secure their crowns. Civil war is destroying the common people, the ruling House of Baratheon and the major houses of Westeros: House Arryn of The Vale, House Baratheon of Storm's End, House Greyjoy of the Iron Islands, House Lannister of Casterly Rock, House Martell of Dorne, House Stark of Winterfell, House Tully of Riverrun, and House Tyrell of Highgarden. Stannis Baratheon's attempt to take King's Landing has been defeated by the new alliance between House Lannister (backing Joffrey) and House Tyrell. House Martell has also pledged its support to the Lannisters through the forces of Dorne, while House Arryn of The Vale have yet to take the field or declare their allegiance. Meanwhile, a large host of wildlings are marching toward the Wall under Mance Rayder, with only the tiny force of the Night's Watch in its path; and in the distant east, Daenerys Targaryen is on her way back to Pentos, hoping to raise forces to retake the Iron Throne.
The novel A Storm of Swords begins in the final months of 299 After the Landing and carries on into the year 300 AL. ... (Summary by Wikipedia)

A Game of Thrones by George R. R. Martin

A Game of Thrones is the first of seven planned novels in A Song of Ice and Fire, an epic fantasy series by American author George R. R. Martin. It was first published on 6 August 1996. The novel A Game of Thrones won the 1997 Locus Award. A Game of Thrones was nominated for both the 1998 Nebula Award and the 1997 World Fantasy Award.
The first volume in the "A Song of Ice and Fire" trilogy which tells of the treachery, greed and war threatening the Seven Kingdoms south of the Wall. In a world scarred by battle and catastrophe, it describes the deeds of a people locked in conflict and the legacy they will leave their children.
A Game of Thrones follows three principal storylines simultaneously. Early in the story, Eddard Stark, as Lord of Winterfell, on behalf of the Seven Kingdoms, must condemn and execute a deserter of the Night's Watch, with his sons among the witnesses. On the return to Winterfell, Eddard's sons discover six direwolf pups, which are entrusted to Eddard's six children. The direwolf is the sigil of House Stark and is integral to the Stark family. Following the death of Lord Jon Arryn, previous "Hand of the King" (the highest advisor to the king), King Robert Baratheon visits Eddard at Winterfell. Because he trusts him as an old friend and ally in the previous struggle for the throne, King Robert asks Eddard to become the new Hand of the King. Eddard agrees, against his instincts... (Summary by Wikipedia)