Whakarāpopototia te tuhinga:  I whānau mai ia he tamaiti hauora, he oranga katoa kei mua i a ia. Engari i te tau kotahi noa iho o Zach Parnaby, ka tino ruarua te heke mai o Zach Parnaby i te wā i kitea ai e nga tākuta he mate iranga kino te tamaiti. I muri noa iho i te Kirihimete ka riro i ngā mātua o Zach, a Lindsey rāua ko Ben Parnaby, te rongo whakamataku, he mate onge tā rāua tama, he mea i tuku mai i roto i ō rāua ira. Ko te mate, e mōhiotia ana ko Krabbe Luekodystrophy, e pā ana ki te kotahi i roto i te 100,000 tāngata puta noa i te ao, ka meinga a Zach kia ngaro āta te āhei ki te haere, ki te kōrero, ki te kite, ki te whakarongo rānei. Kua whakatupatohia e ōna tākuta ōna mātua, kāore pea ia e ora i tua atu i tōna whā o ngā tau. I a ia e 17 marama noa iho te pakeke, ka kitea e nga taote a Zach Parnaby, e whakaahuahia ana me tana whaea a Lindsey, he mate iranga o te mate Krabbes, ka ngaro haere te kaha o te tamaiti ki te haere me te korero. Kua whakatūpato ngā tākuta ki ngā mātua o Zach, a Lindsey rāua ko Ben, e kore e taea e tō rāua tama te kite i tōna whā o ngā rā whānau. I te whakatau kia whai hua ia i te wā e toe ana ki a ia, kua whakarārangitia e te tokorua he rārangi hiahia. I runga i te rārangi 16 ngā tūtohu, ko te hiahia kia noho ki roto i tētahi motokā ahi, kia tūtaki ki te pūāhua pakiwaituhi, ki a Fireman Sam. I tua atu i ngā pūāhua pakiwaituhi me ētahi atu rārangi tae atu ki te kaukau i te moana me te haereere i te poti, e whai ana te whānau ki te āwhina ki te kimi rongoā mō te mate iranga. Inaianei, kua oati te tokorua ki te whakanui ake i te mōhio ki te mate o tā rāua tama, i a rāua anō e whakariterite ana i tētahi rārangi o ngā mea me kite, me mahi e te tamaiti 20 marama te pakeke i te wā e toe ana ki a ia. I tēnei wā, kua tūtaki a Zach ki tana pūāhua pakiwaituhi tino pai, ki a Fireman Sam, ā, kua eke ki runga i a Thomas The Tank Engine. Kua pai ki a ia te haerenga kaipuke, kua hoatu ki a ia tana ake kuri, ā, kua tūtaki ki ētahi o te kapa Newcastle United. Engari ko ōna mātua, e rua tekau mā iwa, nō Spennymoor i County Durham, e tino tūmanako ana ka tutuki i a ia te rārangi. Kei te haere tonu mai ko te kaukau i te moana, te eke paihikara, te tutaki ki te pea tūturu tae atu ki a Mickey Mouse, me te ite i te waipuke e horoi ana i tona mahunga. Ko Lindsey me Ben Parnaby ngā mātua o Zach...
Kua kitea a Zach Parnaby he mate iranga, he mate Krabbe. E kore pea te tamaiti 20 marama te pakeke e kite i tōna whā o ngā rā whānau, kua whakatūpato ngā tākuta. Ko te mate, e pā ana ki te kotahi i roto i nga tangata 100,000, ka meinga nga turoro ki te heke haere me te ngaro i te kaha ki te haere, ki te korero, ki te kite me te whakarongo. Kua whakarārangitia e ōna mātua a Lindsey rāua ko Ben Parnaby tētahi rārangi o ngā mea e hiahia ana ia ki te mahi. Kua tutaki ia ki a Fireman Sam, kua tutaki ki tētahi tangata rongonui, ā, kua pai ki a ia te eke kaipuke. Kei roto hoki i te rārangi te kaukau ki te moana me te kimi rongoā mō tōna mate.