Season 1 In a post-apocalyptic city, all of the adults have been killed as a result of an unknown virus, leaving the children and teenagers to survive in a state of anarchy. Several social groups, or tribes, have formed, including the "Locos", an unruly tribe controlling the city under the leadership of Zoot, who is later accidentally killed. On the streets, Amber and Dal lead a group of children to safety and take refuge in an abandoned shopping mall, forming a new tribe called the "Mall Rats". They are joined by Bray and Trudy, who is pregnant; Bray's brother, Zoot, is the father. The tribe learns to solve issues including food and
water shortage. A second wave of the virus strikes the city, and the tribe tries searching to find an Antidote. They travel to a base called Eagle Mountain, where a pre-recorded message confirms the Antidote's existence.
Season 2 At Eagle Mountain, Amber and Zandra, who is pregnant, are killed in an explosion. The tribe continues searching for an antidote to the virus and are successful, with Tai-San becoming the only one aware of the formula to produce it. Under Bray's leadership, the Mall Rats use their position of power to unite the other tribes and bring peace to the city. A bill of rights is developed by Danni, along with a trading market in the mall, and a newsletter by Ellie detailing the city's progress. The virus is later diminished, and a new tribe called the "Chosen" surfaces, they are remnants of the Locos who now worship Zoot as their god.
Season 3 The Chosen take control of the city, led by the Guardian and the "Supreme Mother", who is a
brainwashed Trudy. The Mall Rats are captured and, along with other prisoners of the city, are given the choice to join the Chosen or work as slaves, with many civilians being sent away due to rebellion. After escaping, Bray, Ebony, Lex and Dal encounter the Eco tribe and discover that its leader is Amber, whose death had been faked by Ebony. The Eco tribe join the revolt and the remaining Mall Rats recruit other tribes to their side. The Chosen are overthrown, and Ebony is elected as city leader though manipulation; she banishes Bray and Amber for speaking against her as a mysterious plane invades the city.
Season 4 The city is invaded and conquered by a group of paratroopers, who are called the "Technos" and possess advanced technology. Ebony maintains control of the city through a deal with the Technos general, Jay. After Bray is captured, Trudy helps Amber give birth on the outskirts of town. They flee to the Ecos, then later rejoin the Mall Rats. In an attempt to create a utopia, the leader of the Technos, Ram, releases a virtual reality game to which the people of the city become addicted in exchange for workload. Ebony and Jay betray Ram and escape the city. The Mall Rats defeat Ram with the assistance of Ram's lieutenant, Mega.
Season 5 Mega becomes the new leader of the Technos, and plans to take over the city. He orders everyone to be branded with a barcode and set to manual labour. Ebony is manipulated by virtual reality to believe that Zoot is alive. The Mall Rats try to learn the location of their members who were removed by the Technos. Ram is rescued by a vagabond, Slade, who takes him to the country town Liberty. Amber and Jay lead an attack against the city, capturing Mega. Ram infiltrates Mega's technology and creates an artificial intelligence program, which goes rogue and releases a new virus. The Mall Rats and their allies evacuate the city by boat. ==Characters==