The Sims family comes to Z.E.R.T. to better prepare for the breakdown of society during civil unrest. Through a series of lessons culminating in a final test, family head Charlie must guide and protect his family using the skills they have learned. Single mother Stevie fears for her son’s safety in the aftermath of a super volcano. She travels to Z.E.R.T. to refine her survival skills. New Price: (as of 03/11/2019 02:13 UTC) During a volcanic fallout simulation, her knowledge and abilities are put to the test.