Vicki (
Jill Whelan) models the bridesmaid's gown she plans to wear for Julie's (
Lauren Tewes) wedding, while Isaac (
Ted Lange) finds a flaw in the wedding gift that he bought on the crew's behalf. Barbara (
Michelle Phillips) feels jealous of Connie (
Jenilee Harrison) and Ralph's (
Patrick Duffy) relationship and sends him a love letter, which Connie intercepts. Having been captured by Deke (
José Ferrer) and Milo (
Harry Morgan), the Mongala (
Patrick Ward) is caged below in the hull of the ship. When Milo finds out some new information about the Mongala, Vivian (
Katherine Helmond) issues an ultimatum. Gopher (
Fred Grandy) and Doc (
Bernie Kopell) continue their pursuit of Julie's replacement, Yvonne (
Delvene Delaney). While the crew members are in Sydney for the wedding, Julie and Tony give them a tour of the Rossmore Animal Preserve, where Tony is on staff.
—Maisie Fleckum