The mysterious newcomer Vincent attracts the unwelcome attention of the Kemble Gang, a bunch of notorious brigands who control the locality. Vincent finds himself captured - and staked out to die on the treacherous Gull Beach.

Having escaped from the Kemble Gang's clutches, Honesty makes a desperate bid to save Vincent's life. He must be quick - the tide is entering Gull Beach and Vincent faces a watery death.

Helping out an old smuggler called Rummy Culbert results in Vincent almost being caught by revenue officer Taggart.

Honesty's interest in Sophia, a spoilt young girl staying with Sarah, leads to trouble.

Jack has to try to rescue Sarah and her grandfather, who are being held by a rabble of shipwrecked convicts.