After entering the portal, and smartly deciding not to destroy the portal and trap themselves on this new plane, they head to a nearby town and speak to a guard about the environs. They take his direction and head south on a road that leads into a mountain tunnel. In the tunnel, Grodd and Hikari subsist on the local fare of mushrooms while Jaxson tries to convince them that hard tack is [https://www.youtube.com/watch?v=ESu9KxoxWLk much more delicious]. On the second day of their journey, Grodd and Hikari find giant 6 foot tall mushrooms while looking for food. The mushrooms attack them! Grodd has another close call with death.
They make it into the city and avail themselves of the local temple's healing. Then, after Hikari buys a battle-tankard, it is straight to a merchant's tavern where Jaxson makes a big show for the patrons about their battle with the giant fungi, and how their parts can be sold on other planes for a great profit. He talks a group of young merchants into investing in his venture in exchange for a portion of the profits.
After striking the deal, our 'heroes' skip town the next morning and return to Sigil.