Cugy_2345: You launch into orbit and plan a Hohmann transfer at a Morle-Bullara transfer window, then perform the escape burn, the finally wait until your are in the Bullarian Sphere of Influence, then burn your engines retrograde or aerocapture with the atmosphere until you are in a Bullara orbit, then fire your engines or aerobrake until your periapsis intersects the crust of Bullara, and hooray you're back at home.