Easily one of the best games of all time.
This is how the story starts out: It has been two years since Banjo and Kazooie defeated Gruntilda the evil witch. She is rotting in a hole at the foot of Spiral Mountain when her sisters and her servant come along and free her. At this time Banjo, Kazooie, Mumbo and Bottles are enjoying a nice game of cards when Mumbo hears a noise and goes to investigate. He is spying on Grunty until she sees him. She fires a huge magic spell at Banjo's house. So Mumbo hurries back and tells everyone to get out because Grunty is back and she is firing a spell at the house. Bottles does not believe him. He thinks that everyone wants to quit because he is winning. Banjo, Kazooie, and Mumbo escape the house seconds before it is blown up by the spell. Bottles is killed so Banjo and Kazooie set off on a journey to defeat the evil witch once again and revive Bottles.
Like the first Banjo game, you will be traveling to different worlds trying to collect Jigsaw pieces(Jiggies). Along the way you will also be collecting Jinjos, Musical Notes, Hidden Moves from JamJars, eggs, and Glowbos which are the magical creatures that let you chango forms.
In this game there are many many worlds to explore, bosses to defeat, and Jiggies to collect. This is a game that will be remembered as one of the best games of all time.