Doctor Carson Beckett finds himself in an uncomfortable situation when he becomes a patient in his own infirmary. After a disastrous mission, Beckett brought back to Atlantis with a broken leg - and a bad case of amnesia... but that's the least of his troubles..Cared for by Dr Gilbert, Beckett watches as a strange affliction overcomes his friends, one by one members of the Atlantis crew are brought in unconsious and unresponsive yet with no sign of trauma....