Snowglobe 7 is set in 2099 when the world's global warming has become a great problem. Snowglobe 7 was one of the buildings set up to contain sheets of ice to preserve them against global warming. It is situated in Dubai. Due to Snowglobes being extremely expensive to maintain, many were sold off as visitor attractions. Snowglobe 7 was one of only three left that were purely scientific. The section of ice within it, unknown to the Humans, contained the last Gappa, bizarre, blood-thirsty aliens that look like a cross between a spider and a monkey with a massive, fleshy nose. While Martha tries to help with an unknown disease spreading through the dome, the Doctor investigates. The Gappa killed some humans on maintenance and used their bodies as hosts for future Gappa. Service robot Twelve collapsed several of the tunnels in the ice of Snowglobe 7 in an attempt to kill the Gappa, but failed. The Doctor detonated the engine of a ship that had crashed in the ice thousands of years ago, killing the Gappa but destroying the Snowglobe and melting the ice.
