The ending of The Jungle Book is pretty straightforward: Mowgli's animal friends return him to the Man Village, he sees his first girl (who is alarmingly flirty for an eight-year-old encountering a feral boy), and he immediately floats after her, drunk with love. Bagheera helps Baloo accept that Mowgli is where he belongs, and they sing and dance back into the jungle. So it all ends with a couple of children pursuing a casual romance and some talking animals putting on a show. Pretty normal stuff.
How It Almost Ended:
In the wisely shelved eight-minute alternate ending, Mowgli approaches the village when Buldeo, a crazy man, tries to on blow Mowgli's brains out TWICE, all while claiming that Mowgli is a shapeshifter. Three months later (no, seriously), Mowgli calls Buldeo out for falsely claiming to have killed Shere Khan. Buldeo responds to this the only way he knows: by trying to shoot a child. A child he's now known personally for three months. In broad daylight. In public. Mowgli's parents do nothing to Buldeo about this second murder attempt, and don't believe Mowgli about Shere Khan. And we're still. Not. Done.
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So now that village life is ten times suckier and more dangerous than jungle life, Mowgli grabs a torch and steals away to live with the animals again. Then, for some reason, he rampages through the jungle, terrorizing animals with fire, picking a fight with his wolf dad, and challenging Shere Khan to battle. Mowgli then changes his mind, calls him a few names, and runs away. Remember, this was all meant to have happened after The Jungle Book movie that we already know was finished.
But there's an after party to the after party, because Mowgli then vents to Baloo and Bagheera about how terrible Man Village was, and they decide they hate him now. Mowgli officially belongs nowhere. Then Buldeo finds Mowgli and takes him out for some ice cream. Oh wait! No. He threatens to shoot a child again unless Mowgli takes him to the Lost City, which means that we're now packing 2 Jungle Book movies' worth of plot into the conclusion of one. Mowgli does so, at which point Buldeo decides he's going to burn down the entire jungle and orders Mowgli to run along and die in the fire. Mowgli knocks the torch into the river, saving Shere Khan and the jungle. Of course, he once again ends up on the business end of Buldeo's rifle.