A multi-compartment storage and mixing container for separately storing two or more components and for mixing the components in the container immediately before use. The container comprises an outer container and an inner assembly. The inner assembly comprises a plunger assembly comprising a stem and a plurality of spaced apart partitions mounted perpendicularly thereon. The inner assembly is transformable from a first storage position, where two or more separated sealed compartments are defined within the container, to a second mixing position, where there is free communication between all portions within the container.