In this paper we have laid down the first example where, counterintuitively, the magnetic nanoparticles, dispersed in liquid drops (in a high-viscous PDMS medium) aggregates and deencapsulates out of the drop under the action of magnetic force overcoming the strong resisting drop-PDMS capillary forces. Given the severity of such capillary forces, such complete deencapsulation of particles from the interior of a drop is a very rare event, and to the best of our knowledge, this is the first study that shows that. We identify the distance where this deencapsulation happens, the corresponding time it takes, and the volume of detached aggregate across a broad range of concentration of magnetic nanoparticles and volume of the drop. Higher concentration and higher volume are shown to promote the drop de-encapsulation against a fixed external magnetic field. To explain the trends, we identified the relevant dynamic forces acting on the drop-PDMS-nanoparticles system and gave a set of equations to predict the de-encapsulation distance outside the studied range of parameters. Finally, we anticipate that this study will form the basis of a technology that will enable an on-demand deposition of nanoparticles (at desired locations and in desired amount) that will serve a host of applications ranging from targeted drug delivery to additive manufacturing.