Bill is attacked and held prisoner.
Triffids and disease run rampant.
A comet's passage begins the collapse of civilization when it frees giant plants to seek their revenge against humans.
Triffids stalk men worldwide; six years later, Bill and Jo face a new threat as Jack Coker prepares to rescue them.
Militant activist Jack Coker captures Bill as he and Jo try to join a survivor's organization; plague breaks out.
Millions of comet-watchers lose their sight; Bill Masen realizes the blind are defenseless against carnivorous Triffids.