Derrick races to finish building 13 unique devices in three days at his pop-up workshop in LA, leading to the single biggest night of his career at The Frida Project fundraiser where each dog he helped walks down the red carpet.

Derrick travels to LA to host a pop-up workshop for animals in need. This proves to be one of the biggest challenges yet in Derrick's career as he builds more prosthetics in three days than he ever has before.

Derrick helps a Flemish Giant rabbit named Diego who has a front limb deformity.  Later, he revisits Chicago, Illinois to meet a 10-year old dog named Birdie, who has never walked with four legs.  Derrick is challenged with building a full limb prosthesis that Birdie will accept and use to prevent further injury to her front leg.

Derrick Travels to California to meet Story, a puppy found with a missing paw. her tender stump makes walking painful and puts pressure on her other limbs. Derrick hopes that a custom prosthetic will give her story a happy ending.

Host Derrick Campana travels to Louisville, Kentucky to create prosthetic legs for Hanabi, a pit bull terrier born without front paws.

In Austin, Texas, Derrick faces his greatest challenge yet as he creates a custom lift to offer quadriplegic cow Champion a new sense of mobility.

In Deltona, Florida, Derrick brings hope to a mother and daughter as he crafts a custom cart for their potbelly pig named Valentine.

Derrick travels to Ontario, Canada to meet best friends Winnie, a two-year-old dog, and Chip, a six-month-old sheep. Derrick builds them both a custom cart that will allow them to explore the farm together.

Derrick travels to an animal sanctuary in Renton, Washington to build a brace for Amelia, a cow born with leg deformities. Derrick hopes that building Amelia a prosthetic leg will lengthen her life.

Host Derrick Campana travels to California to meet Martin and Jesse Kove, stars of the "Cobra Kai" franchise, and help create a prosthetic limb for their 3-legged dog, Bubba.

In Raleigh, North Carolina, host Derrick Campana helps Kaitlyn surprise her sister Kamryn by creating a full-limb prosthetic for Kamryn's dog Amiri after he lost his leg in a golf cart accident.