  Recently, a new class of models describing the quark mass hierarchy has been
introduced. In this class, while the t quark plays a minor role in electroweak
symmetry breaking (EWSB), it is crucial in providing the quark mass hierarchy.
In this paper, we analyze the dynamics of a particular model in this class, in
which the b' and t' quarks of the fourth family are mostly responsible for
dynamical EWSB. The low energy effective theory in this model is derived. It
has a clear signature, a 2 + 1 structure of composite Higgs doublets: two
nearly degenerate \Phi_{b'} and \Phi_{t'}, and a heavier top-Higgs resonance
\Phi_t \sim \bar{t}_{R}(t,b)_L. The properties of these composites are
described in detail, and it is shown that the model satisfies the electroweak
precision data constraints. The signatures of these composites at the Large
Hadron Collider are briefly discussed.
