The plot is classic Sonic anime cheese. It involves the Babylon Rogues (Jet, Wave, and Storm) and a hunt for ancient treasure. While the story isn't going to win an Oscar, it provides a great backdrop for the gameplay and features fully voiced cutscenes that are surprisingly high quality for a Wii title.

Get the "Beta" or "Development" version from the official site.

This is the gold standard for Wii and GameCube emulation. It allows you to run the game in 4K resolution, add widescreen hacks, and even use modern controllers like the Xbox Series X or PS5 controller.