A familiar face joins Derrick to help with the increased workload at Bionic Pets HQ, where a cavalier king charles spaniel is fit with a custom helmet. Derrick then travels to San Diego, California to help a bouncy puppy named Teo, who is a double amputee. Teo’s parents, Milton and Vanessa, were frontline workers during the Covid crisis, and adopting this energetic puppy during the pandemic was a light that guided them through dark times. But, Teo’s joyful determination to get around puts him at risk of further injury. Derrick has to come up with a brand new cart design that gives Teo the freedom he deserves and allows Milton and Vannessa to take him on trips to the Southern California beach.