Overhead squat 12 min build to a heavy single:
3-3-1-1-1-F @ 75-85-95-105-115-125

Then for total time:
10 toe-to-bar
90 double unders
rest amount of time it took to complete (1:28)
20 toe-to-bar
60 double unders
rest amount of time it took to complete (1:52)
30 toe-to-bar
20 double unders
9:20 total