From the introduction:
Romantic teen adventure drama in a futuristic school setting.
Construction of the space elevator “Yggdrasil” was completed in the year 2169, in time for the bicentennial celebration of Man's first moon flight. As the largest and quickest space elevator to date, and the first one fit for human use, Yggdrasil ushered in a second golden age of space exploration. The deployment of solar energy on massive scale has, for the first time, lowered the marginal costs of orbital deployment close to zero, leaving sheer capacity of the elevator as the only meaningful limitation for humankind attempting to leave the gravity well of Earth.