First shown in 2016, Stacey Dooley travels to Greece to follow children on the migrant trail, as they flee wars and seek new lives in Western Europe. From small toddlers travelling with families to unaccompanied teenagers journeying thousands of miles alone, Stacey witnesses their experiences first hand. During her trip, Greece closes its borders to migrants and Stacey sees the striking impact of this on the young and vulnerable.