When an underachieving single father inadvertently becomes an MI5 agent, he must keep his government job a secret while battling his ex-wife for custody of their precocious son.
Now a fully licensed MI5 agent under the eccentric eye of The Examiner, Tim is still raw from the disappointment of Caitlin's fiancé turning up unexpectedly and so he sets about trying to sabotage their relationship with the help of best friend Chris. Meanwhile, Marcus starts a new school term only to discover that his status as top dog is under threat from new boy Nick. And the family has to deal with a new therapist, Owen, whose unorthodox methods give Philip cause for concern when he realises that Owen is trying to seduce Judith.