After stealing Grizzy's jar of Yummy chocolate spread, the Lemmings propel the bear far from the log cabin. Grizzy lands in a temple where he finds a crystal skull which gives you the power to cause chaos.
Night has fallen and the solar panels do not generate enough electricity to charge Grizzy's TV. He sees the Lemmings playing with fireflies that could make his panels work, and tries to distract the Lemmings and capture the fireflies.
Grizzy and the Lemmings fight over the last spoonful of Yummy. Their brawl is interrupted when they happen upon a full crate of chocolate spread in the garage. The rodents snatch the crate and take off on a drone. The bear catches up with them, mounted on the back of a giant bat, but the cargo falls onto the roof of a sacred Mayan temple that's boobytrapped! When they recover the Yummy, Grizzy and the Lemmings are pursued by a stone giant!
After a spat over a jar of Yummy, Grizzy and the Lemmings find gold leaf-wrapped chocolate bits scattered in the jungle. Delicious! On the backs of a bat and a tapir, the rodents and the bear fight over the harvest of candy.
The Lemmings organize wrestling combats on the living room couch. Grizzy, weary of the clamor, stops the match. The displeased Lemmings retaliate, but during their fight the cabin's wood floor caves in and they all fall into an old sidecar with four wrestling masks inside. Grizzy, two Lemmings and a partridge launch into a pitiless combat.
The Lemmings take off with the last jar of Yummy chocolate spread. Grizzy catches up with them but they drop the jar and it lands in a nearby sacred temple. While trying to get inside, they accidentally activate a mechanism that blocks the entrance. Grizzy and the Lemmings must resolve riddles and overcome dangerous obstacles along the path to the Yummy – before the other one gets there first!
Short on food supplies, Grizzy has gone out to gather fruit. He comes back with a basketful but discovers that the Lemmings have stolen the last helping of Yummy chocolate spread in the cabin. A fight breaks out.
