In 3415 the Nebulon Colony is suddenly overshadowed by a giant creature that is so passionate, its beauty freezes it — trapping it in ice! It is one hundred years later that Eleventh Doctor and Amy arrive with a patio heater (from the TARDIS' patio) and begin to thaw the people out. However the creature appears and tries to stop them ruining everything. The creature explains that as a traveller long ago, he found the colony and its peaceful harmony so perfect he didn't want it to change, and so froze it in time.