After hearing that it gives the power to fly, Blu steals the ring from Hal Jordan, gets sent to Oa, and makes up a team of flightless birds so he can save Jewel from Nigel and Marcel. Thomas the Tank Engine doesn't have any brakes and can't stop going around the Island of Sodor. So it's up to Frank Barnes and Percy to help stop him from crashing.
Did You Know?
In RiOa, Blu gets beamed to Oa from Rio de Janeiro, but in the wide shot that shows the earth, he is shown coming from somewhere very far east of Rio, probably either northern Africa or Europe. See more
References Hole in the Wall