Three's a Crowd Utilizing a high-powered telescope, Robyn and Hawk locate a particular destination in space and fly there to seemingly spend some time together without inviting Eagle along. This leaves their friend frustrated and upset at being left out. After a series of fruitless attempts to learn why they went without him, Eagle locates the pair via the same telescope, and decides to secretly follow… all the way to Jupiter’s volcanic moon, Io, where he observes their activities. When Eagle accidentally reveals himself, Robyn and Hawk resent being spied on. The friends quarrel – but soon find themselves having to frantically work together to escape an erupting volcano. Later, safely back on Earth, Eagle learns why his friends left without him: they wanted to surprise him with a weird-looking volcanic rock from Io for his “secret” oddly-shaped rock collection!