The episode starts with Sonic's room looking really messy. Amy scolds him and orders him to clean it up. After that, Amy invites Tiff and all of her old friends to clean up the city park to help keep their home planet green. They dispose all of the littering into separate trash bags and recycle bins, and even clean out the park's fountains.
- This episode is mostly about Earth Day.
- Sonia, Manic and Chris are mentioned in this episode.
- This is one of the rare moments where Sonic briefly addresses Amy as his "mother".
- Sonic's medallion from Sonic Underground that was formerly used to transform into an electric guitar can be seen hanging on the wall in a picture frame somewhere in Sonic's room.
- Number of Sonic characters: 6
- Number of Kirby characters: 2