The double show - on Saturday AND Sunday - will see the top 40 singers go head to head for a place in the live shows.
Each of the four coaches - Jessie J, Danny O'Donoghue, Will.i.am and Sir Tom Jones - will pit their singers against one another. They must send five home, and take five through to the live finals.
There's going to be tears, drama, decisions and plenty of brilliant singing.
Watch a sneak peak at the action to come below!