Magnus Chase is an einherjar, which means that he's been killed in battle and is now one of the Norse god Odin's warriors. Not only that, he's the son of the god Frey, the god of fertility and healing. Last time, he retrieved Sumarbrander, the sword of summer, also known as Jack, and barely managed to stop Ragnarok. This time, Magnus must locate another weapon, Mjolner, Thor's extremely powerful hammer. If the giants find out, they will attack Midgard, the world humans inhabit. Magnus will have to find the hammer before they do. Magnus and his friends soon discover that a giant named Thrym has Mjolner. What's more, Thrym is planning on marrying Magnus's friend Samira! If she marries him, Thrym will give the hammer back. At least that's what he says. Loki, the god of trickery and also Samira's father, urges them to collect the bride price, the Skofnung Sword, and the Skofnung Stone. But Magnus suspects that Loki has a plan that he's not telling them. What is it? Will Magnus and his friend ever get Mjolner back? I liked this book because it's really funny.