
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.
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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)
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