Episode 2-1
Title: "The North Remembers"
Directed by Alan Taylor
Written by David Benioff & D. B. Weiss
Original air date -- April 1, 2012
To Cersei's dismay, Tyrion takes up his post as acting Hand at King's Landing. At Dragonstone, Stannis Baratheon proclaims allegiance to Melisandre's new god and lays public claim to the Iron Throne, revealing Joffrey's bastardry. As this news reaches the capital, the Gold Cloaks slaughter Robert's bastards. Having won three victories, Robb Stark offers the Lannisters peace in exchange for the North's independence, sending Theon to gain Balon Greyjoy's support and Catelyn to seek Renly Baratheon's. Beyond the Wall, the Night's Watch find shelter with the Wildling Craster and his daughter-wives. In Essos, as her people slowly die in the Red Waste, Daenerys sends out riders to look for help.
Source:
https://en.wikipedia.org/wiki/Game_of_Thrones_(season_2)