2D was a multi, and 2NT showed 20-22 HCP
3H was a transfer to spades (not alerted), and it now starts getting murky. South thinks 4H is a superaccept, and signs off in 4S. North thinks 4S is a cue, and cue bids 5C, to which South retreats again to 5S.
At this point, North bids 5H (insufficient), which when the director is called, is accepted by East.
How do you rule if a} South passes 5H
b} South corrects to 5S, and North passes
c} South corrects to 5S and North corrects to 6H, which South passes.