The lives of two generations of two wealthy families intertwine as they clash and connect over money, sex, scandals and secrets in Melbourne.

When a group of high-school friends posts an online rumour about a rival, it sparks a chain reaction that leaves no one untouched. Cyberbullying, sexting, filmed fights and police action ensue—will these friends be Tagged forever?

In an outer-suburban skateboard park, mounting tension between two young sisters comes to a head.