Danny's wife Nicky is a hypnotherapist. She's hypnotized Danny so many times that whenever Nicky snaps her fingers or utters a secret trigger word, Danny helplessly sinks into a trance and becomes completely obedient to her every command.
Nicky's parents don't get on well with Danny. Nicky decides to 'lend' Danny to her mother, Denise, with the instruction "all you want to do is obey my mum's every command". He finds himself ringing Nicky's parents' doorbell in a hypnotized daze.