  The quest for room-temperature superconductivity has been a long-standing
aspiration in the field of materials science, driving extensive research
efforts. In this work, we present a novel hydride, YSc$_2$H$_{24}$, which is
stable at high pressure using a crystal structure prediction approach with a
fixed composition based on known structures. The discovered material is
crystalline in a hexagonal unit cell with space group P6/mmm and has a
fastinating structure consisting of two distinct cages: Sc@H$_{24}$ and
Y@H$_{30}$. By conducting an extensive numerical investigation of lattice
dynamics, electron-phonon coupling, and solving the isotropic Eliashberg
equation, we have revealed a significant value of $\lambda$ = 2.96 as the
underlying factor responsible for the remarkably high critical temperature
(T$_c$) of 306-332 K in YSc$_2$H$_{24}$. As pressure increases, the T$_c$
remains above the ambient temperature. Our work has the potential to enhance
the existing understanding of high-temperature superconductors, with
implications for practical applications. The unique network of these cage-like
structures holds great promise for advancing our understanding of
high-temperature superconductors, potentially leading to innovative
applications.
