Thanks to Megan, Josh ends up embarrassing himself on tv when he gets to be the weather boy at his father's tv station. He gets really nervous due to what Megan said and starts twitching, leading everyone to make fun of him for it and Josh to hate leaving the house. Meanwhile, Drake is preparing for the talent show, but right as he's about to go on he hears the group before him singing his song. He attempts and eventually succeeds in getting Josh to do the Blues Brothers routine with him.
With the most predictable ending ever, Drake and Josh win the talent show.
Though it's a common story, this episode was a really fun one to watch. I've never seen the Blues Brothers, but the routine looked like it was a lot of fun to film.