Sybil Dormin hires Cookie to cater a party for her brother Sir Adrian. Sir Adrian begins teaching Ellie after seeing her dance, but in his drive to have her achieve perfection, he causes her to ignore her health problems and push herself to perform at his party. Ellie collapses during her performance and is carried off on a stretcher to rousing applause, now requiring the operation she put off. Bob and Cookie get into trouble when Sybil Dormin's stallion, Thursday's Child, turns up at Bob's house after escaping. Bob tries to hide the horse in his garage but it breaks out along with the nag. Frank finds Thursday's Child and returns him to Galloway Park where Esme, Bob and Cookie are preparing to work the party. Bob and Cookie rush out to the stables when they hear their horse, Adriata, has shown up. After being caught by Sybil and her stable manager, Sybil offers to buy their mare to keep control of any offspring. The hospital's new bulk-buying initiative results in a shortage of space...