It's time for "Guess that Plot!"

[Tupin]

One of these is the true storyline to Banjo-Kazooie 3.

http://kotaku.com/374798/one-of-these-banjo-threeie-plots-is-real

* 1. Banjo and Grunty team up against a new threat, falling in love in the process.
    * 2. Kazooie is abducted by aliens and Banjo heads out to search the cosmos.
    * 3. Banjo and Kazooie travel back through time in pursuit of the witch's giant T.I.T. (err... Time Interfering Truck!)
    * 4. Banjo comes out of retirement to stop his home being redeveloped into tower blocks and malls.
    * 5. War comes to Spiral Mountain, and Banjo becomes a reluctant leader.

I say the most likely ones are 1, 4, and 5.

3 would be good, especially as a throw-back to their old style of humor.

[Redpaige13]

I could see #2 or #3 happening. 

[LinkXLR]

3 looks pretty realistic to me.

[Lotos]

# 3. Banjo and Kazooie travel back through time in pursuit of the witch's giant T.I.T. (err... Time Interfering Truck!)
Or
# 5. War comes to Spiral Mountain, and Banjo becomes a reluctant leader.

But #5 was pretty much Conker in a sense...

[Riosan]

2, or 3, knowing Rare and their love of innuendos.