The Legend of Tarzan picks up where the 1999 feature film left off, with the title character adjusting to his new role as leader of the apes following Kerchak's death, and Jane adjusting to life in the jungle. Rounding out the cast are Jane's father, Professor Archimedes Porter; Tantor, the germophobic elephant; and Terk, a wisecracking female gorilla and Tarzan's old wrestling buddy.

Haré was a happy boy living in the jungle with his mother, but then one day Guu showed up.