Jordan and Cian watched their mum lose her life at a young age to a rare form of dementia. Years later came another devastating blow as they found out they also carry the faulty gene, meaning they will almost certainly develop symptoms in their 40s. 

Refusing to let the diagnosis define them, the brothers are determined to make their time count. Together, they began running for charity to raise awareness and funds for dementia research, turning fear and grief into purpose and action. 

Bill Bailey picks Unza Saleem to create a lasting legacy for the brothers, but as she is getting to grips with the portrait, she has her own family emergency which threatens to derail the project entirely.