They thought they understood ancient engineering. They were wrong.

Cuchu Ramirez and Matias Kim barely survived their first journey through time. Now, as their Seattle high school faces state-level attacks on Indigenous archaeology programs, they're pulled back 4,500 years to witness the Builders of Monuments—and discover that ancient peoples were far more sophisticated than any textbook dared to admit.

This time, the stakes are higher. The Heritage Foundation 2.0 knows about their temporal abilities, and "America First" archaeology is systematically destroying evidence of pre-Columbian achievements. But Cuchu and Matias have 48 hours to witness engineering marvels that will shatter every myth about "primitive" ancient peoples.

Three Continents. Three Engineering Miracles. One Impossible Truth.

SAN AGUSTÍN, COLOMBIA (2000 BCE): Deep in the Andes, master stone carvers create mysterious burial chambers and massive sculptures with precision that defies explanation. Cuchu watches artists work with tools that shouldn't exist, creating monuments that demonstrate mathematical knowledge Europe wouldn't achieve for millennia.

SPIRO MOUNDS, OKLAHOMA (2000 BCE): Across ancient North America, sophisticated burial ceremonies reveal continental trade networks moving materials from the Great Lakes to the Gulf of Mexico. Matias documents engineering that connects communities across thousands of miles—older than the Egyptian pyramids, more complex than anything in contemporary Europe.

STONEHENGE, ENGLAND (2500 BCE): The famous stone circle isn't just a monument—it's a precision astronomical instrument requiring generations of mathematical knowledge and social coordination. They witness the final placement ceremonies during the summer solstice, understanding for the first time how ancient peoples tracked cosmic time with breathtaking accuracy.

But witnessing these achievements comes with a price. The Heritage Foundation 2.0 has escalated from local censorship to digital warfare, manipulating search algorithms and social media to bury archaeological evidence. As their modern objects begin dissolving and temporal energy surges threaten to trap them in the past, Cuchu and Matias realize they're not just fighting for historical truth—they're fighting for the future of human knowledge itself.

When they try to erase the past, sometimes the past fights back.

This volume features:

• Astronomical engineering that reveals ancient peoples' sophisticated understanding of cosmic cycles
• Continental trade networks demonstrating global connections predating European "exploration" by millennia
• Character development as Cuchu and Matias learn cultural protocols and mutual respect
• Escalating contemporary stakes as educational censorship becomes a coordinated national attack
• Enhanced time travel mechanics as characters master their temporal abilities

Perfect for fans of: Diana Gabaldon's time travel, Brandon Sanderson's worldbuilding, and anyone fascinated by ancient mysteries that mainstream archaeology barely acknowledges.