The Professor and the Polar Bear: A Wild, Wild Ride

The magnificent magical merchant, Umbramudium Prexijanda (known far and wide as The Professor), has suffered a terrible mishap. Shashi, the polar bear that pulls his Roving Emporium has gone wild, careening across the countryside and out of sight. He needs you to chase it down and retrieve it. Unfortunately for you, it seems that it has been spilling its content of magic items behind it as it went, leaving a trail of arcane destruction and danger in its wake. Can you wade through the ranks of wild creatures armed with wands and wondrous things to save the cart?

A One Shot adventure for 4 characters of 3rd level. All published content accepted. Post below with concept. Plan for 4 hours of play. We will be using Discord for voice chat.