Back in 1998, I was only 14 the first time I took command of Raynor and Kerrigan. Blizzard's real-time strategy games were what I grew up on and what introduced me to the genre. Fifteen years later, their saga is still developing with a record breaking layer of complexity. In the most general, cryptic, non-spoiler plot synopsis of Heart of the Swarm: the Terran Dominion is on the rebel's tail, sh*t goes down with Jim, and Kerrigan attempts to regain control of the Zerg swarm to fulfill her passionate revenge on Emperor Arcturus Mengsk.
As expected, you play the majority of the game as Sarah Kerrigan. The former Terran Ghost and Queen of Blades, returns to humanity after the Xel'naga artifact cleanses the Zerg world of Char. Now faced with transitions from Zerg to human, Kerrigan finds herself in a world that resents her for the millions she's slaughtered while fighting the savage Zerg urges hidden inside of her mind. Not to mention Mengsk is doing everything in his power to see to it that Kerrigan's revenge isn't fulfilled.