Deep within the
Australian region of Southern Rivers, a young and energetic
anthropomorphic tasmanian tiger orphan named Ty is playing tag with one of his adoptive
Bilby siblings when he falls into a deep cave. Waiting for help to arrive, Ty stumbles across a
mural depicting a battle between a group of tasmanian tigers, a bird-like creature, and a colossal
ape-like
mecha. Ty's
ironbark boomerang, which once belonged to his biological mother, begins to glow as a spectral figure appears before Ty. Introducing himself as Nandu Gili, the figure tells Ty that many years ago, an evil
cassowary known as Boss Cass made an attempt to steal five mystical
talismans which act as keys to access a mystical alternate dimension known as "
The Dreaming" which Nandu Gili watches over and protects, in order to conquer the world. A group of boomerang-wielding tasmanian tigers, including Ty's parents, intercept Cass and fight against his giant mecha suit for control of the talismans. After a fierce battle, Cass uses one of the talismans to open a portal into The Dreaming, sucking in and imprisoning the tasmanian tigers. Before he is sucked into the portal himself, Ty's father dislodges the remaining talismans from their pedestals using his custom
fly-by-wire boomerang, the "Doomerang", resulting in an explosion that collapses the portal to The Dreaming, destroying Cass' mecha and scattering the talismans across Southern Rivers. Nandu Gili then informs Ty that Cass is plotting to reacquire the talismans and tasks him with finding the talismans before Boss Cass does and rescuing his family from the Dreaming. Ty's
cockatoo friend Maurie then appears and helps Ty out of the cave. After telling him the story, Maurie agrees to accompany Ty on his adventures to find the talisman and stop Cass. Ty and Maurie head over to the Bli-Bli Station outpost in the Rainbow Cliffs region of Southern Rivers, where the pair meet with Maurie's
koala scientist friend Julius, who informs the two that he's developed a
teleportation device which can locate and teleport the talismans to their current location. To do so, Ty is tasked with finding a significant number of
elemental geode-like rocks known as "
Thunder Eggs" in order to supply power to the teleportation device. Using portals created by Julius, Ty travels across Southern Rivers in search of fire-imbued Thunder Eggs. Along the way, Ty finds a second ironbark boomerang near a
billabong and provides assistance to the residents of Southern Rivers, including his
dingo girlfriend Shazza and his
tasmanian devil park ranger friend Ranger Ken. Ty then travels to the
Great Barrier Reef and meets up with his
lifeguard platypus friend Rex who teaches him how to swim and provides him with a pair of boomerangs that work underwater known as Aquarangs. Eventually, Ty acquires enough Fire Thunder Eggs to power Julius' teleportation device, which locates and teleports the first talisman to their location. Attempting to grab it, Ty and the talisman are accidentally sucked into a portal leading to the
Australian outback where they encounter a giant hostile
boar named Bull. After a brief scuffle, Ty pacifies Bull after tricking him into slamming into multiple
termite mounds, securing the first talisman. During this time, Boss Cass is overseeing a
excavation in search of the missing talismans when one of his frill lizard henchmen recovers one of them. Using the residual energy from the Fire Thunder Eggs, Julius creates a pair of new fire-imbued Flamerangs for Ty, which he uses to access the next region of Southern Rivers in search of ice-imbued Thunder Eggs for the teleportation device. Unbeknownst to Ty, he is stalked by Sly, a mysterious tasmanian tiger working for Cass. Sly then returns to Cass and informs him of Ty's activities, to which Cass mockingly begins phase 2 of his plan of reacquiring the talismans. In search of the Ice Thunder Eggs, Ty continues to provide assistance the residents of Southern Rivers, including helping Maurie's friend Dennis, a cowardly
green tree frog, get back to his home in the billabong and rescuing a family of koala children lost high in the Snowy Mountains. After gathering enough Ice Thunder Eggs, Julius powers his teleportation device and locates another of the missing talismans. Ty is once again teleported as he attempts to grab the talisman, this time being sent to the Great Barrier Reef where he encounters a
cybernetically augmented shark enslaved by Boss Cass named Crickey. Using discarded
oxygen canisters, Ty destroys Crickey's cybernetic components, freeing the shark from Cass' control and securing the second talisman. Upon learning of this news from his henchmen, an enraged Boss Cass sends Sly to intercept and eliminate Ty. Ty is given a pair of Frostyrangs by Julius created using the leftover power from the Ice Thunder Eggs and is then tasked with finding a final set of lightning-imbued Thunder Eggs to find the next talisman. Making his way through the
Australian rainforest, Ty encounters a
lyrebird named Lenny, who sends Ty on a wild goose chase to a
water treatment facility to rescue a prisoner of Boss Cass named Princess Orchid. Upon arriving at the location, Ty is ambushed by Sly and the two fight. After a fierce battle, Ty defeats Sly, who vows to defeat Ty during their next encounter before escaping. Ty continues to provide assistance to his friends while searching for the Lightning Thunder Eggs, including rescuing the koala children from
bushfires on the Snowy Mountain and by taking care of Boss Cass' frill lizard henchman that had been disturbing residents of the Great Barrier Reef using their
Jet Skis. Ty gathers enough Lighting Thunder Eggs to power Julius' device once more, which locates another missing talisman. Ty and the talisman are teleported to the Snowy Mountains, where they encounter one of Cass' underlings, an unnamed female
thorny devil (later known as Fluffy in
Bush Rescue) piloting her own ape-like mecha suit. Ty defeats Fluffy's mech, forcing her to retreat and earning Ty another talisman. During this time, Boss Cass' henchmen are able to locate the second and final talisman. Infuriated at the loss of another talisman, Boss Cass hatches a scheme to lure Ty to his secret base and defeat him using his rebuilt mecha suit and take all the talismans for himself. Using the leftover energy from the Lightning Thunder Eggs, Julius gives Ty the most powerful elemental boomerangs of all, the Zappyrangs, and is sent to the outskirts of Boss Cass' secret base to retrieve the final two talismans. Ty encounters Shazza again, revealing that one of the Frill Lizards Ty defeated earlier had dropped one of the missing talismans. Before she's able to give it to Ty, Shazza is kidnapped by another of Cass' henchwomen, an unnamed
Ghost Bat (known as Shadow in Bush Rescue) who takes her deeper into the facility. Ty gives chase and defeats Shadow, and both reclaim the missing talisman and free Shazza, who gives him a kiss before escaping. Before he faces Boss Cass, Ty runs into Sly, who challenges him to a battle. After dispatching him, Ty saves Sly from falling into a pool of
magma. A deeply conflicted Sly retreats once again as Ty hops onto Boss Cass' repaired mecha as it begins leaving the facility. Boss Cass begins mocking Ty as the two engage in a battle atop his mecha, with Ty managing to blow off the head of the mecha. Unable to completely destroy the rampaging mecha, Sly suddenly appears, betraying Boss Cass and giving Ty his father's Doomerang. Ty then guides the Doomerang to the core of Cass' mecha, destroying it. Ty, Sly and Shazza all manage to escape and make it safely down to the surface of Rainbow Cliffs while Cass and the final missing talisman are both forcibly ejected from the ruined mecha. Nandu Gili appears and places the final talisman on the pedestal, opening a portal to The Dreaming and freeing Ty's parents, who warmly embrace Ty. If the player achieves 100% completion, a post-credits scene plays showing a cybernetic tasmanian tiger closely resembling Ty being activated in a secret facility. ==Development==