The world is still reeling from the events of Hong Sha. Daniel tries to build a new life with Viktor, but ex-husband Ralph takes a terrible revenge which will have consequences for the whole family.Edith is badly affected by what happened abroad, and returns home for good. Rosie attends Viv Rook's political rally, and is amazed by her power and passion - and Viv is elected to become an MP.Celeste loses her job, and she's disturbed by Bethany's (Lydia West) fascination with technology. But that's just the start of her problems. When Stephen and Celeste are woken at 4am by a series of urgent texts, they realise their entire life is about to come crashing down…