The phrase "to embark on an adventure" means to begin a journey or experience that is exciting, challenging and often involves some level of risk or uncertainty. Full definition
This fall weekend, embark on an adventure with your love and take in all that your hometown (or the nearest big city) has to offer with this exciting date idea! (cupidspulse.com)
My students and I were about to embark on an adventure in poetic exploration and self - expression. (educationworld.com)