In South Australia, Phil Breslin, weapon maker Moogy Sumner and a team of weapon experts try to find the complex science behind Returning Boomerang, Australia's most iconic weapon.

Host Phil Breslin observes senior weapon makers as they craft the Amerr. Experts reveal the scientific principles, followed by a challenge of speed and skill, highlighting how the weapon was once one of the fastest on earth.

Phil Breslin, along with weapon makers Brendan Kennedy and Trevor Kirby, tries to understand the science behind the leangle and parrying shield, before honouring an Aboriginal cricketer's demonstration from 1868.

In Albany, Western Australia, Phil Breslin and weapon maker Larry Blight discover the Kodj. Phil and Larry, along with a team of weapon experts, unpack the science behind this weapon.

Dave mangenner Gough teaches Phil Breslin how to make the Allenar, a long spear, by sourcing dogwood, shaping it and using heat to mould the pointed tip.

Phil Breslin and weapon maker Joseph Williams unpack the science behind the manoeuvrability of the Wartilykirri, a lethal boomerang.