I got it for Gameboy Color/Gameboy Advance. it goes all the way through both movies, so maybe that's why it's called TLK2 there. I've beat the whole thing, though. I only play it now to try and get the full 100% of bugs and the amulet for each level. the mini games are great too, I never get bored of them
TLKFAA's Kitten got it for me for my birthday or something from E-bay.
if it's the same as the Gameboy game, you defeat Scar then it moves on to the TLK2 levels and you have to save Kiara and all that junk. then you have to fight Zira on the last level. omg, I beat the last level for the first time in complete darkness! I'd got to the point where I fight Zira and ran out of street lights to go by on the way home, so I hit buttons like crazy and just hoped I was clawing Zira to pieces. then we passed some light and I could just make out a glimpse of the awesome screen thing when you win.
I had to beat it again just to see how it looked when he defeated her