N.O.W.H.E.R.E. has trapped some of the Earth's youngest heroes in its Alaskan base, so Superboy, the Teen Titans and the Legionnaires trapped in the 21st century team up and escape.
The Culling is a cross over that takes place between Superboy, Teen Titans and Legion Lost. The prelude to the event will begin in April's Legion Lost #8, then begin in earnest with Teen Titans Annual #1, continuing through out the ninth issues of each series involved. The end of the cross over also brings the beginning of the new series, The Ravagers.
With Superboy, the Teen Titans, and the members of the Legion of Super-Heroes who are trapped in the 21st century captured in N.O.W.H.E.R.E.'s base known as The Colony, N.O.W.H.E.R.E.'s leader Harvest pits the young heroes against each other, in an attempt to weed out the weak, and use the survivors in his elite guard known as Ravagers. After a brief skirmish, Tim Drake and Tyroc get their teams under control, ordering them to both stop fighting each other, when a mass amount of other metahumans sent into a blind fury by Leash attack the two groups. Both the Titans and Legion are able to quell the attack, but at the cost of their ally, Artemis' life. With both teams banding together, Harvest decides to begin the true test, and sends his elite guard to attack, including Rose Wilson, Warblade, Omen, Leash, and others.