Seoul, South Korea (CNN)Reverend Esther was on a mission. She wanted to help craft a world where, as her church put it, "only God is God."
Only then would Earth be ready for the Second Coming of Jesus Christ, she said on her website.
Esther, whose legal name in South Korea is Shin Ok-ju, predicted there was a great famine and believed she and her followers needed to find a new home.
They set their sights on Fiji, in the Pacific, and quickly began "laying the eternal foundation to raise Fiji to be the center of the world as promised in the Bible."
The church's corporate arm, GR Group, set to work opening businesses across the small Pacific island, in industries ranging from construction to agriculture.
Hundreds of people from around the world followed, according to the Grace Road Church website.
But the completion of this Christian utopia appears to have been interrupted by scandal.
Shin was arrested along with three of her followers on July 24 on charges of forced confinement and physical assault, South Korean police said. Authorities allege Shin was keeping some of her followers in Fiji against their will. Shin and one of her followers were arrested after flying into Seoul from Vietnam, while the other two were picked up at the church's headquarters, police said.
For now, the most immediate concern for South Korean law enforcement is 400 of the church's followers, some of whom are stranded in Fiji.
South Korean authorities said many of them appeared to have been stripped of their passports upon arrival by senior members of the church.
Some want to return to South Korea and are receiving consular assistance, but authorities are worried they are currently under the watchful eye of Shin's more strident followers, who are called "guardians."
The case has brought into focus the often secretive world of South Korea's quasi-religious groups, and their surprising reach and influence.
The Grace Road Church maintained connections at the highest levels of the Fiji government. Pictures in local media and on the GR Group website show Fiji Prime Minister Josaia Voreqe Bainimarama personally appearing beside GR Group's president to give the company an award for its business successes in 2017.
The award website called GR Group "a shining example of what hard work, dedication and ingenuity can translate into a business."
The Prime Minister's office declined to comment about the case in an email to CNN.