Eureka!

Scrat comes across a time machine and is transported to various times all in pursuit of his beloved acorn.

Chip and Dale are starving in their tree home when they notice a plentiful supply of acorns on an island in a lake. To get to the island, they borrow a miniature model ship of Donald's to sail on. The irate Donald, however, doesn't appreciate them stealing his ship and makes several attempts to get it back and thwart their scheme to get to their acorn paradise. Chip and Dale are, of course, always one step ahead of Donald.

Set against the backdrop of a postapocalyptic Earth whose Eastern Hemisphere was destroyed by a massive solar flare, leaving what life remains mutated from radiation and fallout. The story revolves around a group of treasure hunters who extract such objects as the Mona Lisa, the Rosetta Stone and the Crown Jewels while facing rival hunters, mutants and pirates.