In the first programme in this two-part series, Tipperary hurler Brendan Maher leaves his club Borris-Ileigh for the Adelaide Strikers and the professional sport of cricket, while former England cricketer Steve Harmison tries his hand at hurling.
The sporting experiment concludes as Gaelic footballer Aidan O'Shea samples life in the NFL, while former Miami Dolphins star Roberto Wallace takes his place on the Breaffy team.
Donegal footballer Michael Murphy leaves his club Glenswilly for France and Clermont Auvergne to try rugby with the Top 14 team, while former Welsh Rugby international Shane Williams tries his hand at Gaelic football.