Many of us take speaking for granted. But what if the words in your head just won't come out? For over half a million people in Britain, a stutter affects their lives every day. This one-off documentary follows struggling stammerers as they enrol on an intensive four-day course called The McGuire Programme. The documentary features Musharaf Asghar, affectionately known as Mushy, from Educating Yorkshire. In 2013 he found a place in the heart of the nation as millions tuned in to watch him learn methods to overcome his often crippling stutter, and achieve the C grade he needed in his English GCSE. Although Mushy's stammer has improved, he is still often left speechless. Joining him on the course is 23-year-old Vicky Croft who developed a stammer following a minor stroke. Now more likely to stay at home than go out with friends, Vicky dreams of getting back to the bubbly, confident person that she was before her stutter. The programme follows Mushy, Vicky and other stammerers on an emotional and dramatic journey as they learn new breathing techniques and tackle talking on the phone and even public speaking. By the end of the course will they find the courage and resilience to finally find their voice?