He should be playing with his brothers, getting ready for kindergarten and enjoying his early years.
Instead, he's in an intensive battle with a rare cancer at just four years old.
On November 10, 2020, just six weeks before his fourth birthday, Murray Bridge's, Nicholas Fiegert was diagnosed with a rare and aggressive cancer called Rhabdomyosarcoma.
After what was initially thought to be minor stomach problems, scans showed abnormalities and he was abruptly ushered out of the radiology department.
Mother, Lisa Fiegert said the family never expected it would be tumors.
"During the scan we were immediately rushed through to the Women's and Children's Hospital in Adelaide where oncologists were waiting to begin further tests," she said.
"This included blood, scans, lumbar punctures and biopsies.
"The first week was unbearable. The doctors were not sugar-coating anything and we knew from very early on, Nicholas had a big fight ahead of him.
"Not only were we trying to understand what was happening, we had to break the news to our other three boys."
Making the situation more stressful, COVID restrictions made it difficult for the family to visit.
"2020 was already an incredibly tough year for us," Lisa said.
"James works away interstate and due to COVID, he had months away.
"When he returned, he had to quarantine if he had been between states.
"James was home less than a week when we got Nicholas' diagnosis.
"With multiple restrictions in the hospitals, there were many times when only one parent could go in and his brothers were unable to visit him.
"It added a lot of difficulties to an already difficult situation."
He is very brave, he's been through so much.Lisa Fiegert
At just four, Nicholas has shown tremendous strength and bravery for someone at such a young age.
"Nicky is such a resilient kid," Lisa said.
"We have noticed as the treatments go on he takes longer to bounce back. He's lost a lot of weight and obviously his hair.
"He was supposed to start kindy this year, but that's not possible now.
"He loves running and trying to be a big boy with his older brothers, but it's hard for him to keep up now. Radiotherapy was very hard on him.
"He is very brave, he's been through so much.
"He has a port which is used to administer the chemo, he calls that his robot. But some days he just does not want to go back to the hospital.
"It's hard because he is a four year old boy, he should be running and playing, not doing daily trips to Adelaide spending hours in hospital."
A close friend of the family, Elissa White set up a Gofund me page to help the Fiegert family through this incredibly tough time.
"Lisa and James were very reluctant to accept any help until now," Elissa said.
"Lisa was told very early on that she would need to have at least two years off from her work as a registered nurse.
"With Nicholas being so unwell, having so much treatment, COVID restrictions and James not able to work at the moment, it's time to help.
"They have a lot of increased expenses like petrol.
"As a community we all want to contribute and make sure money is one thing they do not need to worry about.
"We hope to raise enough money so James can stay home and be with his family, that is where he needs to be at the moment.
"Lisa and James are also very passionate about raising awareness about childhood cancer and the impacts it has on not only the child but the whole family.
"As Lisa has said, "You never think your child will be the one to be diagnosed with cancer, but here we are.
"Sadly it does happen."
If you would like to help the Fiegert family and Nicky through his battle, you can donate here at: www.gofundme.com/f/support-for-nickys-family-during-cancer-treatment.