After The Fortress of Solitude

You are in control of Batman and Robin. Follow the ghost studs to the vans, then use the grapple point to reveal a box. Smash it to reveal LEGO pieces, then build them into a satellite. Hop into the Batwing and tow off the top of the truck, then drop it on the cart to reveal LEGO pieces. Build them into another satellite. Head outside the prison walls and repair the truck's radiator. Follow the truck, then destroy the box to reveal LEGO pieces. Build them into the final satellite. After the Balrog is summoned, follow the ghost studs to start the next level.