Plot Gridlock_(Doctor_Who)

novice hame, appears @ doctor experience.

martha, milo, , cheen drive fast lane , begin hear strange noises around. nearby driver warns them escape slow lanes before being eaten creatures live in fast lane, milo refuses. doctor, finding himself in van above fast lane, looks out bottom , discovers floor of motorway filled macra. macra monstrous crab-like alien beings once intelligent have devolved feral beasts, attempt capture , eat fly in fast lane. doctor watches milo s van caught macra claw, martha realises beings attracted light , motion generated van , has milo cut power. saves them beasts leaves them few minutes of breathable air in van.

novice hame catches doctor , teleports him against senate building face of boe waiting. hame explains new mood drug called bliss proved addictive, , virus mutated bliss drug, became airborne , wiped out entire surface population in matter of minutes. in motorway spared being sealed in , quarantined, there not enough energy unseal motorway , result caused people trapped inside years. face of boe wired himself system keep motorway operational. doctor determines whatever danger bliss may have caused before has long passed, , works hame try power systems unseal motorway. face of boe sacrifices life energy system, allowing ceiling of motorway open. doctor broadcasts call drivers escape through ceiling , gives martha directions come find him.

when martha arrives, doctor , novice hame tending on face of boe. face of boe close death , glass container encased shattered. doctor tries encourage face of boe live, both last of kinds. knowing dying, face of boe imparts final message doctor: not alone . doctor , martha leave hame mourn , doctor tells martha message meant nothing. martha knows doctor lying , forces him tell truth. undercity fills sound of entire surviving population of new new york singing hymn abide me, explains martha indeed last time lord , tells gallifrey , time war.