After training at the dolphin reconnaissance school, the dolphin Tristan was sent on an important mission to a secret military base of the USSR to obtain information about the Russians' new strategic weapon - a submarine that transforms into an airplane. After receiving a message that an unidentified object was discovered in Soviet territorial waters, moving towards a secret base, the Soviet command ordered to urgently send an experienced special agent, the dolphin Isolde, to intercept it.
Vasiliy Livanov
Colonel Yellow / commander Morzhov (voice)
Tatyana Dogileva
Isolda Pavlova (voice)
Boris Bystrov
Tristan (voice)
Semyon Farada
Henry / Greg (voice)
Vsevolod Abdulov
Forwarder / helmsman (voice)
Lyudmila Gnilova
Crab (voice)
Nikolay Grabbe
Well-fed ship captain / truck driver (voice)
Efim Katsirov
lieutenant colonel Red / muskrat (voice)
Vladimir Prokhorov
John / Kremer / terrorist / captain / Morzhov / Yellow (voice)
Yuri Puzyryov
Vlas Afinogenovich Sukhoi / announcer (voice)
Lev Shabarin
Radio operator / watchman / parrot / news announcer (voice)
Aleksandr Ocheretyanskiy
Brigadier General / Yasha / Stukach / Instructor (voice)
